On August 21, YOFC (Yangtze Optical Fibre and Cable) released its 2026 semi-annual report. Revenue: 9.809 billion yuan, up 53.64% year-over-year. Net profit: 2.925 billion yuan, up 888.88% year-over-year. The company's optical transmission products segment alone generated about 6.126 billion yuan in revenue during the first half, up roughly 59.2% year-over-year, with a gross margin of 63.11%. This isn't an isolated case. The Wind Fiber Index is up over 130% so far this year. Yongding shares posted 47.75% revenue growth in the first half. Corning's AI-related sales nearly doubled. The entire fiber optic industry is in the middle of a boom cycle. And the driving force is one thing: AI data centers. How Much Fiber Are AI Data Centers Actually Eating? YOFC's semi-annual report states it plainly: revenue growth was driven primarily by the accelerated construction of compute-data centers. The numbers are staggering. According to CRU, AI-driven data center optical cable demand has jumped from less than 5% of total demand in 2024 to a projected 35% in 2027. Global data center fiber demand is expected to hit 91.6 million fiber-kilometers in 2026, up 32% year-over-year. By 2030, that number is projected to reach 128 million fiber-kilometers, with AI applications accounting for over 80 million fiber-kilometers. To put that in perspective: a single large-scale GPU cluster consumes 5 to 10 times more fiber than a traditional data center. Every rack, every connection, every link in an AI cluster requires fiber. Beyond Telecom: Specialty Fiber Is Feeling the Pinch Too AI data centers aren't just driving demand for standard telecom fiber. High-density cabling scenarios are driving demand for G.657 series bend-insensitive specialty fiber. Supply-demand data tells the story: global G.657 specialty fiber demand in 2026 is about 370 million fiber-kilometers, while China's effective production capacity is only about 200 to 210 million fiber-kilometers — a gap of over 46%. And prices reflect the shortage. G.657.A2 specialty fiber has gone from around $3–4 per fiber-kilometer last year to over $30 today — a 10x increase. Orders are booked through 2028. Major Chinese fiber manufacturers have shifted 30% to 40% of their capacity from standard telecom fiber to specialty fiber — and it's still not enough. What Makes This Cycle Different In the past, fiber price fluctuations were mostly driven by telecom carrier procurement cycles. This time is different. The clearest evidence: two of the three major demand drivers — AI data centers and fiber-optic drones — barely existed until recently. Both are still in rapid growth phases, with no visible ceiling in the near term. CRU projects AI and data-center-related optical cable demand will grow at about 32.6% CAGR over the next five years — roughly five times the overall market. What This Means for Hecho Technology YOFC's earnings surge is a signal from the telecom fiber space. But the surge in demand for high-density, high-bandwidth fiber from AI data centers is also driving specialty fiber categories like G.657. The specialty fiber market is moving from standardized products to customized solutions. AI data centers need high-bandwidth, low-loss fiber with tight bend tolerance. Industrial inspection, medical devices, and research applications need equally targeted custom solutions. Hecho Technology has been in specialty fiber for nearly two decades, with products spanning plastic optical fiber, glass fiber, and quartz fiber — serving industrial laser transmission, medical device integration, and research applications. In this AI-driven fiber demand surge, the trend toward specialty fiber customization is accelerating — and customization is exactly where Hecho's strength lies. If you're looking for a custom specialty fiber solution, reach out to the Hecho technical team. About Nanjing Hecho Technology Co., Ltd. Hecho Technology focuses on optical transmission solutions for medical, industrial, and scientific applications. Products include plastic optical fiber, glass fiber, quartz fiber, fiber bundles, light guides, and sensors, with OEM/ODM customization available. Website: www.gohecho.cn | Email: sales@gohecho.cn | Tel: (025) 52374096

Telecom fiber is just one branch of the fiber family. In industrial, medical, and research applications, the more common and flexible choice is often glass fiber. Glass fiber has a core and cladding both made of glass materials — typically multi-component glass fiber, which consists of multiple glass compositions and allows flexible adjustment of refractive index and numerical aperture. Four Key Characteristics of Glass Fiber High temperature resistance: Operates reliably at up to 350°C and withstands autoclave sterilization. Plastic optical fiber (PMMA) typically maxes out around 70°C. Large acceptance angle: Numerical aperture can reach 0.5 or higher, capturing light from a wide angle. Paired with broad-angle light sources, it delivers larger illumination areas. Chemical inertness: Resists most solvents and cleaning agents. Safe for direct contact with human tissue in medical applications. Good flexibility: At 50 microns in diameter, it can bend to a radius of about 5 mm — more flexible than most people expect. Glass Fiber vs. Plastic Fiber — How to Choose? Need high-temperature sterilization, long-distance transmission, or high-precision imaging? Choose glass fiber. Short distance, low cost, general illumination? Plastic fiber will do. Where Is It Used? Medical: Endoscope light guides, surgical illumination, laser therapy — roughly 75 million endoscopy procedures performed globally each year depend on glass fiber. Industrial inspection: AOI, machine vision illumination, flame detection. Research and labs: Spectroscopy, fluorescence detection, microscope illumination. Specialty environments: High-temperature sensing, nuclear industry applications. Market Opportunity The global medical glass fiber market was valued at approximately $110 million in 2025 and is projected to reach $157 million by 2034. The adoption of minimally invasive surgery and endoscopy technology upgrades are the primary growth drivers. Hecho Technology has nearly two decades of experience in glass fiber, offering multi-component glass fiber and quartz fiber products for medical device integration, industrial inspection illumination, and research optical transmission — with OEM/ODM customization available. For inquiries, contact the Hecho technical team. About Nanjing Hecho Technology Co., Ltd. Hecho Technology focuses on optical transmission solutions for medical, industrial, and scientific applications. Products include plastic optical fiber, glass fiber, quartz fiber, fiber bundles, light guides, and sensors, with OEM/ODM customization available.

G.657 specialty fiber: global demand in 2026 is 370 million fiber-kilometers. China‘s effective production capacity? Only 200 to 210 million. That’s a gap of over 46%. Orders are booked through 2028. Customers are putting down deposits just to secure capacity. Major Chinese fiber manufacturers have shifted 30% to 40% of their capacity from standard telecom fiber to specialty fiber — and it‘s still not enough. Where Does the Gap Come From? Two reasons: demand surged, and supply can’t keep up. Demand side — AI data centers are consuming fiber at an unprecedented rate In the past, China‘s fiber demand was largely driven by the three major telecom carriers’ procurement cycles — steady growth with clear seasonality. This time is different. AI compute centers are being built at scale globally — the U.S., Europe, the Middle East, and Southeast Asia are all in the race. A single cluster with 10,000 GPUs consumes 5 to 10 times more fiber than a traditional data center. Global data center fiber optic cable demand grew 75.9% year-over-year in 2025, and is projected to reach 91.6 million fiber-kilometers in 2026 — up another 32%. Beyond data centers, fiber-optic drones are adding new demand. Drones use single-use fiber as consumables — it‘s not reused, it’s replaced. Scaled deployment translates to millions of kilometers of recurring demand. Supply side — expanding production is extremely difficult The core raw material is optical fiber preforms. A single preform plant with 3,500 tons of annual capacity costs $560 million and takes two years to build. Preform manufacturing demands extreme technical precision, and expansion cycles run 18 to 24 months. The four major Chinese manufacturers — YOFC, Hengtong, ZTT, and FiberHome — are already running at 100% capacity, with at most 10% to 15% additional expansion possible under current conditions. The industry went through a prolonged price war, and few companies invested in major capacity expansion. The result: demand is rising, capacity is stuck, and the gap keeps widening. The Numbers Tell the Story G.657.A2 specialty fiber was priced around $3 to $4 per kilometer last year. Today? Over $30 — a 10x increase in 12 months. Standard fiber prices surged too. China‘s G.652.D bare fiber spot price hit $11.50 per kilometer in March 2026 — up 165% from January, and 418% year-over-year. CRU projects a global supply-demand gap of 16.4% for fiber optic cable in 2026. This isn’t something that gets fixed in a few months. Long expansion cycles, raw material constraints, and continued global demand growth mean tight supply isn‘t going away anytime soon. Domestic Substitution: From “Window of Opportunity” to “Certainty” The global specialty fiber market has long been dominated by U.S. and European manufacturers. The U.S. has maintained export controls on high-performance specialty fiber through the Commerce Control List. But this time, the landscape is shifting. Chinese manufacturers now account for over 60% of global fiber production. YOFC, Hengtong, ZTT, and FiberHome hold the second, third, fourth, and fifth positions globally — combined market share close to 50%. In the demand surge driven by AI infrastructure, Chinese fiber companies have seized the opportunity. Domestic manufacturers are achieving scale production in mid- and low-power ytterbium-doped fibers, and some leaders are breaking through technical barriers in high-power ytterbium-doped and ultra-broadband erbium-doped fibers. Domestic substitution is no longer a future prospect — it‘s happening now. What This Means for Hecho Hecho Technology has been in specialty fiber for nearly two decades, with products spanning plastic optical fiber, glass fiber, and quartz fiber — serving industrial laser transmission, medical device integration, and scientific research applications. This structural shift in the specialty fiber market — from standardized products to high-end customized solutions — aligns directly with Hecho’s core strength in custom, non-standard manufacturing and OEM/ODM. If you‘re looking for a custom specialty fiber solution or have questions about current market trends, reach out to the Hecho technical team. About Nanjing Hecho Technology Co., Ltd. Hecho Technology focuses on optical transmission solutions for medical, industrial, and scientific applications. Products include plastic optical fiber, glass fiber, quartz fiber, fiber bundles, light guides, and sensors, with OEM/ODM customization available. Website: www.gohecho.cn | Email: sales@gohecho.cn | Tel: (025)52374096

Among fiber optic products, fiber bundles are easy to overlook — but they're among the most widely used. Most people think of optical fiber as a single thin strand — light goes in one end and comes out the other. That's correct for a single fiber. But in many applications, one fiber isn't enough, or one fiber simply can't do the job. That's where fiber bundles come in. What Is a Fiber Bundle? The definition is simple: a bundle is a collection of individual optical fibers grouped together. A single fiber transmits one path of light — point-to-point. A fiber bundle can do much more: multiple inputs to one output, one input to multiple outputs, or even multiple inputs to multiple outputs. The fiber arrangement at each end can be customized. This flexibility means light paths are no longer limited to straight lines — they become networks. You can split one light source into multiple outputs, combine several light sources into one, or position output ends in different locations to suit your setup. What Can Fiber Bundles Do? Scenario 1: One light source, multiple workstations Imagine a production line with four inspection stations, all needing illumination. Equipping each with its own light source is costly and space-consuming. A fiber bundle solves this: place one light source centrally, split the light into four branches, and deliver it to each station. One source to maintain, one power supply — simple and efficient. Scenario 2: Custom-shaped illumination Some inspection tasks don't need a round spot — they need ring-shaped, linear, square, or other custom patterns. A single fiber can't do that, but a fiber bundle can. The input end stays round to connect to the light source. The output end is rearranged into the shape you need. Ring-shaped bundles are common for microscope or camera lens illumination — providing 360-degree shadow-free light. Linear bundles pair with line-scan cameras for continuous scanning inspection. Square or rectangular shapes suit area-scan cameras or specific part geometries. Scenario 3: Light delivery in harsh environments In high-temperature, confined, or corrosive environments, you can't place the light source directly — but you can run fibers. Fiber bundles deliver light from a safe location to where it's needed. With different fiber materials — plastic (POF), glass (GOF), or quartz — you can cover a wide spectral range from near-UV to mid-IR. How to Choose a Fiber Bundle Fiber bundles seem straightforward, but a few key parameters matter during selection: Material: Plastic optical fiber (POF) is low-cost and flexible — ideal for general illumination. Glass optical fiber (GOF) offers higher transmission efficiency and better temperature resistance, with continuous operation up to 350°C. Quartz fiber covers the broadest spectrum, from 190 nm to 2500 nm — suitable for applications with specific spectral requirements. Branch configuration: Straight (one-to-one) is the simplest. Y-shape or one-to-many split light to multiple stations. Multi-input/multi-output handles more complex optical designs. Connectors: Fiber bundles need to interface with light sources and equipment. SMA905, FC, ST, and other standard connectors are available. Custom connectors can also be made. Output shape: Round, ring, linear, square — choose based on your inspection needs. Where Are Fiber Bundles Used? Fiber bundles are found in many applications, but they fall into a few broad categories: Industrial inspection: Machine vision illumination, AOI automated optical inspection, semiconductor wafer inspection, PCB defect detection. Bundles deliver light to hard-to-reach areas and shape it for specific inspection tasks. Medical devices: Endoscope light guides, surgical illumination, medical laser fiber delivery. Medical applications demand higher material purity and biocompatibility, making glass and quartz the preferred choices. Laboratory and research: Spectroscopy, fluorescence detection, microscope illumination. Bundles simplify experimental optical setups with flexibility. Specialty environments: Flame detection, high-temperature sensing, UV curing. Quartz fiber with polyimide coating withstands harsh conditions reliably. What Hecho Technology Offers Hecho Technology has nearly two decades of experience in fiber bundles. We offer three material options: plastic, glass, and quartz. Branch configurations include straight, Y-shape, and multi-branch designs. Output shapes are customizable. Connectors cover SMA905, FC, ST, and other standards, with custom options available. In short: whatever shape, material, or configuration you need — Hecho can deliver. If you're designing a system that needs to split, combine, or reshape light, a fiber bundle is worth considering.

A year ago, G.657.A2 specialty fiber cost $3 to $4 per kilometer. Today, it‘s over $30. That’s a 10x increase — and it‘s still in short supply. Orders are booked through 2028. Customers are putting down deposits just to secure production capacity. Major Chinese fiber manufacturers have shifted 30% to 40% of their capacity from standard telecom fiber to specialty fiber — and the gap still isn’t closed. Everyone in industrial, medical, and research fiber optics is asking the same question: What happened? 1. Three Demand Drivers Hit at Once This isn‘t a single-factor story. Three distinct sources of demand converged at the same time. Driver 1: AI Data Centers AI compute center construction is accelerating globally — the U.S., Europe, the Middle East, and Southeast Asia are all building at scale. These facilities require high-density cabling, high-speed interconnects, and large quantities of specialty fiber. The numbers tell the story: global data center fiber optic cable demand grew 75.9% year-over-year in 2025, reaching 69.6 million fiber-kilometers. 2026 projections stand at 91.6 million fiber-kilometers. CRU projects the global optical cable market will grow at about 6.6% CAGR over the next five years. But AI and data-center-related optical cable demand? 32.6% CAGR — roughly five times the overall market. AI-related fiber demand is expected to jump from under 5% of total demand to 35%. Driver 2: Fiber-Optic Drones Fiber-optic drones are a newer variable in the demand equation. These drones use optical fibers for signal transmission — offering strong anti-interference and low-latency performance. Each drone consumes 20 to 50 kilometers of specialty fiber. And it’s single-use — replaced after every mission. What this means: scaled drone deployment translates to tens of millions of kilometers of recurring demand. This isn‘t tied to the traditional telecom procurement cycle — it’s a persistent consumption stream. Driver 3: Overseas Infrastructure Expansion Beyond AI and drones, overseas infrastructure markets continue to expand. Fiber optic cable and transceiver export volumes posted double-digit year-over-year growth in the first quarter. Overseas demand is adding further pressure to an already tight domestic supply situation. 2. How Big Is the Supply-Demand Gap? Let‘s do the math on G.657 series specialty fiber: 2026 global demand: 370 million fiber-kilometers Effective production capacity in China: 200 to 210 million fiber-kilometers The gap is over 46%. That’s why prices jumped 10x. That‘s why orders are booked through 2028. Demand surged — and supply hasn’t caught up. 3. What Makes This Cycle Different In the past, fiber price fluctuations were mostly driven by telecom carrier procurement cycles — up for a few years, down for a few years. Cyclical. Predictable. This time is different. The clearest evidence: two of the three major demand drivers didn‘t exist until recently. AI data center demand comes from the global computing race. Fiber-optic drones come from expanding military and industrial applications. Both are still in rapid growth phases, with no visible ceiling in the near term. Overseas infrastructure is more traditional, but global digitalization continues to drive steady expansion. Three demand streams, all pulling at once — and all sustained. This suggests a structural shift. Specialty fiber may be transitioning from a cyclical industry to a growth industry. 4. What This Means for the Industry This isn’t just a price spike — it‘s reshaping how the fiber industry operates. In the past, fiber was largely a standardized product. Carrier procurement dictated specifications. Factories produced high volumes of identical products — low margin, commoditized. But this demand surge is driven by high-end, customized requirements. AI data centers need high-bandwidth, low-loss fiber with tight bend tolerance. Drones require specific grades like G.657.A2. Industrial IoT and automotive fiber applications are further diversifying the market. Fiber optics are moving from standardized products to customized solutions. 5. What This Means for Hecho Technology Hecho Technology has been in specialty fiber optics for nearly two decades, spanning plastic optical fiber, glass fiber, and quartz fiber — with a focus on industrial laser transmission, medical device integration, and scientific research applications. The shift from standardized products to high-end customization is where Hecho‘s strength lies. Unlike large-scale telecom fiber manufacturers, Hecho specializes in application-specific optical transmission solutions — whether for industrial sensing, medical laser delivery, or research applications. Customers often need a solution that fits precisely, not a generic product. If you’re looking for a custom specialty fiber solution or have questions about current market trends, reach out to the Hecho technical team.

In machine vision inspection, ring lights are one of the most widely used lighting configurations. But here’s the thing — two types of ring lights look similar, function similarly, but work very differently underneath. Ring light guides (fiber optic ring lights) and LED ring lights. Many engineers find themselves stuck between these two options. Both are ring-shaped. Both reduce shadows. But the price difference can be significant. So what‘s actually different? Which one should you pick? This article lays it out directly. Ring Fiber Optic Illumination 1. The Structural Difference: Where the Light Comes From This is the fundamental difference between the two. LED ring lights are straightforward — LEDs are arranged in a ring, and the ring itself emits light. The light source is right there on the ring, shining directly onto the object. Ring light guides work differently. The light source (LED or halogen) sits remotely. Light travels through a bundle of optical fibers to the ring and exits from the fiber ends on the ring. The ring emits light, but the actual light source is somewhere else. In simple terms: LED ring light: light emits from the ring Ring light guide: light exits from the ring, but the source is remote This structural difference drives everything else. 2. Illumination Uniformity: Continuous vs. Discrete Points LED ring lights consist of individual LED chips arranged in a circle. Each chip is a discrete point of light. Multiple points form a ring. There are gaps between chips, creating alternating bright and dark zones. With enough LEDs packed tightly, the human eye may not notice. But in high-precision inspection, cameras are far more sensitive than the eye — subtle non-uniformity can show up in images and affect measurement accuracy. Ring light guides use fiber bundles arranged continuously around the ring. The output surface has no gaps. Light exits uniformly from the fiber ends, creating a smooth, continuous ring of light. In short: no gaps between light points, no bright-dark alternation. Some studies have compared the two: LED ring arrays produce spot-like shadows, while fiber optic ring light guides deliver uniform, shadow-free illumination. 3. Heat Dissipation: Heat at the Ring vs. Heat at the Source LEDs generate less heat than halogen lamps, but they still produce heat. With LED ring lights, the LEDs are right on the ring — heat dissipates near the inspection area. While thermal management designs help, heat-sensitive samples may still be affected. Ring light guides keep the light source remote. Light travels through optical fibers, which transmit virtually no heat to the output end. The ring itself stays cool. The heat stays at the source, away from the inspection point. This is what people mean by “cold light” illumination. For heat-sensitive applications — semiconductor wafers, precision electronic components — this is a real advantage worth considering. 4. Flexibility and Customization LED ring lights are fixed units. The inner diameter, outer diameter, and number of LEDs are set at manufacturing. Need a different size or angle? You replace the entire unit. Ring light guides decouple the ring from the light source. Need a different ring size or output angle? You swap the fiber bundle, not the entire light source. One light source can work with multiple rings, adapting to different lenses and inspection setups. Fiber material selection also offers more options: glass fiber for high temperature, plastic fiber for lower cost, quartz fiber for UV transmission. LED ring lights offer wavelength choices, but those choices are limited to the specific LEDs used. Selection recommendations: For high uniformity requirements and precision inspection — ring light guides offer smooth continuous output For heat-sensitive samples (semiconductors, precision electronics) — cold light advantage makes a difference For frequent changes in ring size or angle — ring light guides offer more flexibility For budget-conscious general inspection — LED ring lights are a mature, cost-effective choice For routine surface inspection and standard industrial vision — LED ring lights are a proven solution There’s no absolute “better” — only what fits your specific needs. Clarify your inspection requirements, sample characteristics, budget, and installation constraints, and the choice becomes straightforward. Hecho Technology offers a range of ring light guides with various inner diameters, outer diameters, and output angles. Available in glass or plastic fiber, with custom length and connector options. For selection assistance or sample testing, contact the Hecho technical team.

In machine vision and industrial inspection, most people focus on camera resolution and algorithm performance. But anyone who has actually tuned a vision system knows — more often than not, the bottleneck isn't the camera. It's the lighting. Get the lighting right, and defects stand out clearly. Get it wrong, and even the best camera won't save you. This sounds simple enough. But when it comes to selecting a light source — what to look for, what parameters actually matter — not every engineer has a clear answer. This article walks through three key dimensions: power consumption, stability, and wavelength. Power Efficiency: Why LED Is Replacing Halogen If you've been around industrial lighting for a while, you know that halogen and metal halide light sources used to be the standard. They are bright, but they have short lifespans — typically 2,000 to 3,000 hours. They also generate a lot of heat and require additional cooling. LED light sources have changed the game. Take Hecho Technology's S5000D series as an example. It consumes only 65W of power, yet delivers light output comparable to a 250W metal halide source. In other words, it achieves similar brightness with less than a third of the power consumption. With a standard fiber optic light guide, illuminance reaches 800,000 lx at 50mm from the fiber output end. For most high-speed line scan cameras, this is more than sufficient for continuous inspection. And LED lifetime exceeds 30,000 hours — by the time you replace a halogen lamp ten times, the LED might still be running. Lower power consumption means less heat, less energy use, and lower long-term operating costs. For production lines running 24/7, this makes a real difference. Stability: The Hidden Requirement for High-Speed Inspection Brightness alone is not enough. In high-speed inspection, light source stability is often the overlooked variable. Line scan cameras demand highly consistent illumination. Even small fluctuations in light output can show up as stripes or uneven brightness in high-speed scanned images, making it difficult for the algorithm to distinguish between actual defects and lighting artifacts. The S5000D uses multi-stage filtering in its circuit design, achieving output ripple within ±2mV. For most inspection scenarios, this is sufficient to avoid image anomalies caused by light fluctuation. Another parameter that often goes unnoticed is response speed. In strobe lighting applications — such as inspecting moving objects — the light source needs to turn on almost instantly after receiving a trigger signal from the host system. The S5000D responds in under 100ns and supports external trigger frequencies up to 100KHz. In plain terms: trigger signal comes in, light turns on immediately — no delay. Dimming is continuously adjustable from 0 to 100%, with multiple control options: manual panel adjustment, RS232/RJ45 remote commands, 0-5V analog signals, external 10K potentiometer, and PWM signals. For integration into automated production lines, remote control is the more common approach. Wavelength Selection: Different Colors Reveal Different Things This is a detail that often gets overlooked, but it matters more than you might think. Different wavelengths of light interact differently with various materials, colors, and surface characteristics. White light isn't always the right choice. Red light (630nm): Good penetration, suitable for rough surfaces and general illumination Green light (525nm): Sensitive to scratches on metal surfaces, ideal for highly reflective materials Blue light (465nm): Shorter wavelength, suitable for high-precision measurement and semiconductor inspection Warm white light: For applications requiring specific color rendering So when selecting a light source, it's not just about brightness. It's about what you're inspecting, what type of defects you're looking for, and what wavelength makes those defects most visible. In precision inspection, this is often more important than brightness. The S5000D series offers all four wavelength options mentioned above, allowing flexible selection based on inspection requirements. On Fiber Optic Light Guides: Getting Light from Source to Workspace LED cold light sources typically work with fiber optic light guides. The light source sits outside the equipment, and light is delivered to the inspection point through the fiber. The advantage here is "cold light" — heat generated at the source stays at the source. By the time light reaches the output end through the fiber, there's virtually no heat. For heat-sensitive samples or precision measurement applications, this is a critical consideration. Fiber selection involves multiple parameters — length, connector type, branch configuration — and the light source and fiber need to be matched properly. Hecho Technology offers complete solutions covering both the light source and the fiber light guide. Summary Selecting an industrial light source ultimately comes down to balancing a few variables: Power consumption: Affects long-term operating costs and equipment heat generation Stability: Affects image quality and inspection consistency Wavelength: Affects how different defects appear Lifetime: Affects maintenance frequency and downtime costs No single light source works for every scenario. The key is understanding your specific inspection requirements and selecting accordingly. Hecho Technology's S5000D series LED cold light source offers a well-balanced solution across power efficiency, stability, and wavelength flexibility. If you're currently evaluating options for a specific application, feel free to reach out to the Hecho technical team for a discussion. About Nanjing Hecho Technology Co., Ltd. Hecho Technology focuses on optical transmission solutions for medical, industrial, and scientific applications. Products include LED cold light sources, halogen light sources, fiber optic light guides, and fiber optic sensors, with OEM/ODM customization available. Website: www.gohecho.cn | Email: sales@gohecho.cn | Tel: (025)52374096

Unlike standard telecom or visible-light fibers, ultraviolet (UV) optical fiber faces a unique challenge: solarization. The high photon energy of UV light can induce color center darkening in the glass, gradually reducing transmission over time. This isn't a gradual aging process—it's a fundamental materials science problem that demands specific countermeasures in fiber design and material selection. Core Purity: The Non-Negotiable Foundation For UV transmission, core purity is the first and most critical requirement. High-purity fused silica (SiO₂) is the standard choice, but the tolerance for impurities is far stricter than in other applications. Take germanium (Ge), for example. It's commonly used in telecom fibers to raise the core's refractive index. However, Ge has a significant absorption band around 240 nm and readily forms Ge-E' color centers under UV irradiation, making it unsuitable. The same goes for transition metals like iron and copper, along with phosphorus and aluminum—all of which introduce UV absorption bands that compromise performance. Two Practical Approaches to Mitigate UV Damage With core purity assured, two methods are commonly used to further protect UV fibers: High Hydroxyl Content (OH⁻)High concentrations of hydroxyl groups act as a passivation layer within the glass network. They occupy potential defect sites, reducing the probability of UV-induced color center formation. This is why UV fibers typically use high-OH silica—it delivers significantly better transmission in the deep UV range (190–300 nm) compared to low-OH alternatives. Hydrogen Loading (H₂ Loading)Exposing the fiber to high-pressure hydrogen allows H₂ molecules to diffuse into the core. These mobile molecules can repair color center defects as they form during UV exposure—essentially giving the fiber a self-healing mechanism. One caveat: hydrogen gradually escapes at room temperature. If a fiber has been hydrogen-treated, it requires proper storage and should be used within a reasonable timeframe to maintain its UV resistance. A gas-tight coating is also recommended. Cladding Design: Fluorine Doping The cladding presents another design challenge. Pure silica has a refractive index of approximately 1.458, while the undoped core sits slightly higher. To achieve total internal reflection without introducing UV-absorbing dopants, fluorine (F) is the standard choice. Fluorine lowers the refractive index of silica and introduces virtually no absorption in the UV spectrum, making it an ideal solution for UV fiber cladding. Coating Selection: Why Polyimide Matters Coating choice is often overlooked but critical for UV fiber longevity. Standard acrylate coatings—common on telecom fibers—degrade, yellow, and may even fluoresce under UV exposure. These effects compromise both performance and lifetime. Polyimide (PI) is a widely used alternative. It offers excellent resistance to UV aging and high temperatures, maintaining stable mechanical and optical properties under prolonged UV irradiation. For specialized applications, metal coatings (such as aluminum or gold) are also used, though they add complexity and cost. If the fiber has undergone hydrogen loading, the coating must also provide adequate gas barrier properties to prevent premature hydrogen escape. Summary UV fiber manufacturing follows a different logic than conventional telecom fiber: ultra-pure core, fluorine-doped cladding, UV-resistant coating, and optional hydroxyl passivation or hydrogen loading. Each decision serves a single objective—maximizing operational lifetime and stable transmission under UV exposure. Hecho Technology offers UV fiber solutions including high-OH silica fiber and polyimide-coated UV fiber, with customization options available. For more information, please contact our technical team.

The energy consumed by data transmission in computing systems is approaching that of computation itself. This trend is already visible in AI training clusters and high-performance computing centers — the power efficiency bottleneck of electrical interconnects is becoming increasingly apparent, pushing optical interconnect into the spotlight. Conventional lasers have been deployed in data centers for years, but their high power consumption, temperature sensitivity, and complex packaging limit their potential in chip-scale high-density integration. Micro-LEDs offer a different path. They consume less power, are smaller, provide sufficient brightness, and have natural advantages in the visible spectrum — making them a light source worth serious consideration for short-distance optical interconnects. However, efficiently coupling light from a Micro-LED into an optical fiber is not a solved problem. A recent study from Peking University used simulation methods to systematically examine which factors have the greatest impact on coupling efficiency and how to optimize them. I. Three Key Factors Affecting Coupling Efficiency The study used the finite-difference time-domain (FDTD) method to model the optical coupling interface between a GaN-based blue Micro-LED array and a multi-core fiber bundle. The Micro-LED emission wavelength was set to 450 nm, and the fiber parameters were based on commercial blue-light transmission fibers. The researchers examined three factors through controlled simulations. Gap distance The trend is clear: larger gaps result in lower coupling efficiency. The drop is particularly steep in the 0.1 to 1 micrometer range. The reason is that the optical field of the Micro-LED is highly localized in the near-field region — even a slight increase in gap distance causes energy to dissipate rapidly. Beyond this range, once the system enters the far-field region, the rate of efficiency decline slows significantly. From an engineering standpoint, this suggests that compressing the gap to within 1 micrometer yields the greatest benefit. Further reduction still improves efficiency, but with diminishing returns. Core diameter Larger core diameters improve coupling efficiency — especially in the small-diameter range. Micro-LEDs have a near-Lambertian emission pattern, emitting light in all directions. A larger core captures more of this divergent light. However, beyond a certain diameter, the efficiency gains saturate. This points to an optimal range — a point where further increases offer little additional benefit. Making the core excessively large may trade off integration density for marginal efficiency gains. A trade-off is required. Lateral misalignment Perfect alignment between Micro-LED and fiber is difficult to achieve in practical packaging. The simulation revealed an interesting observation: within ±0.5 micrometers of lateral offset, coupling efficiency shows almost no significant variation. There is a "tolerance plateau" where alignment precision is less critical. This tolerance comes from the Micro-LED's inherent optical characteristics — its wide-angle emission provides greater latitude in lateral alignment compared to conventional laser sources. For large-scale integration, this is good news. II. Two Effective Optimization Approaches Building on the above analysis, the study proposed two practical approaches to improve efficiency. Approach 1: Index-matching optical adhesive Filling the air gap between the Micro-LED and the fiber with index-matching optical adhesive (refractive index ~1.5) reduces interface reflection and loss caused by refractive index discontinuities. Simulation results showed significant improvement in coupling efficiency, with virtually no change in crosstalk between adjacent cores. This approach is relatively simple in terms of processing, does not require structural modifications, and is cost-effective. Approach 2: Microlens integration on the Micro-LED surface Adding a microlens structure on the Micro-LED emission surface reshapes the optical field to direct more light toward the fiber entrance. The study confirmed that spherical microlenses do improve coupling efficiency — but with a side effect: crosstalk increases. The reason is that spherical lenses have limited control over high-angle emitted light. Aspherical microlens designs could offer further optimization, though both design and fabrication become more challenging. III. Summary This study provides several clear conclusions that offer useful reference points for chip-scale optical interconnect system design: First, the wide-angle emission characteristics of Micro-LEDs naturally reduce alignment precision requirements — a favorable feature for large-scale integration, providing greater packaging tolerance than conventional laser sources. Second, the design of core diameter and interface structures requires a balance between coupling efficiency and integration density. The optimal choice depends on the specific constraints of each application scenario. Third, while optical elements such as microlenses can improve efficiency, their introduction requires careful evaluation based on the specific application. A trade-off between efficiency gains and crosstalk control is often unavoidable. Optical interconnect is steadily moving from board-level and rack-level toward chip-level integration, and Micro-LEDs are worth watching as an emerging light source in this evolution. The fundamental engineering challenge remains: how to efficiently couple light from Micro-LEDs into optical fibers. From a specialty fiber perspective, improving optical coupling efficiency is never about a single point — the light source characteristics, fiber parameters, and interface treatment all matter. Hecho Technology has extensive capabilities in fiber end-face processing, numerical aperture matching, and custom fiber bundle fabrication, providing end-to-end optical transmission solutions tailored to different light source characteristics and application scenarios. For product specifications and customization options, please contact our technical team. Source attribution: This article references the systematic simulation study on Micro-LED to fiber coupling efficiency conducted by the research team at Peking University. The study used the finite-difference time-domain method to model the optical coupling interface between Micro-LEDs and multi-core fiber bundles. All referenced analysis and data are properly attributed to the original study.

In electronics manufacturing and semiconductor packaging, automated optical inspection (AOI) has become an essential part of quality control. An AOI system's inspection accuracy depends on three factors: camera resolution,algorithm capability, and lighting quality. The first two get most of the attention. Lighting is often the last thing people think about. But anyone who has actually tuned an AOI system knows — more often than not, the bottleneck isn't the camera. It's the lighting.The AOI light source market was valued at approximately $1.21 billion in 2025 and is projected to reach $2.28 billion by 2032, with a compound annual growth rate of 9.44%. Lighting is gradually shifting from being a supporting component in AOI systems to a key driver of inspection efficiency. Common Lighting Problems in AOI Inspection Let's go through a few situations that AOI engineers have probably all encountered.Non-uniform illumination. If the lighting system doesn't deliver uniform illumination across the inspection surface, the camera picks up images with bright and dark areas. On the same board, the bright areas look normal while the dark areas look like defects — and the algorithm struggles to tell whether it's a real defect or just uneven lighting. Poor uniformity in illumination brightness directly affects photoelectric conversion and subsequent image processing. The result is false positives on good parts and missed defects on bad ones.Glare from highly reflective surfaces. Solder joints on PCBs, metal pins on chips, glass substrates — under conventional lighting, these materials produce strong specular reflections that show up as bright spots in the image. Anything under those bright spots is completely obscured. Specular reflection from complex material surfaces is a long-standing challenge in AOI. Glare tends to cause false positives, while shadows tend to cause missed defects — neither is acceptable.Shadowing. When the lighting comes from a single direction or at the wrong angle, the raised structures on components cast shadows that obscure critical features like solder joint edges or pin roots. The smaller the component, the more pronounced the problem.Thermal effects. Traditional light sources like halogen lamps generate significant heat. Prolonged exposure can cause PCBs to warp slightly or the performance of precision component solder joints to drift. The objects being inspected are precision electronic assemblies — thermal effects cannot be ignored.Ambient light interference. The ambient light around AOI equipment is never constant — it changes between day and night, between sunny and overcast days, and when nearby equipment turns on or off. Natural light fluctuates throughout the day, and industrial ceiling lights are both harsh and directional. These uncontrollable variables can cause the same product to yield different inspection results at different times. How Fiber Optic Lighting Solves These Problems Fiber optic lighting in AOI systems isn't meant to replace LEDs. It's meant to solve the problems that LEDs and traditional light sources can't handle. Several characteristics of fiber optics directly address the pain points mentioned above.Flexible light guidance. The light source sits in one place, and the fiber delivers the light where it's needed. Space inside an AOI machine is already tight — cameras, lenses, and motion mechanisms take up most of it, leaving very little room for lighting. Fiber optics can route through tight spaces and around corners — something rigid lighting fixtures can't do. Some fiber optic lighting systems achieve extremely small bend radii, making cabling straightforward.Cold light illumination. Fiber optics transmit light with virtually no heat generation. The light that comes out of the fiber end is cool. This means PCBs don't warp from heat, solder joint performance doesn't drift, and inspection results are more stable.Uniform illumination. Through proper fiber bundle arrangement and light mixing design, fiber optic lighting can achieve high uniformity across the output surface. Whether it's linear or ring light, the uniformity can be consistently high. Uniform lighting means the algorithm deals with stable, consistent images — and false positive rates drop accordingly.Multiple light patterns from a single source. The same light source can produce ring light, linear light, area light, or spot light simply by swapping the fiber bundle. Coaxial fiber optic illumination can achieve 360-degree uniform lighting, virtually eliminating shadows. Different angles of light reveal different types of defects — scratches show up best under side lighting, surface contaminants are easier to spot under diffuse lighting, and edge contours need low-angle light to stand out.Enclosed light path. Fiber optic lighting systems are enclosed from the light source to the output end, unaffected by external ambient light. Whether it's day or night in the workshop, whether nearby equipment is on or off — the lighting conditions remain consistent. This greatly improves the repeatability and comparability of inspection results. Where Fiber Optic Lighting Is Used In actual AOI inspection, fiber optic lighting is used in several specific areas:PCB and FPC inspection. Linear fiber optic light guides paired with line scan cameras provide high-intensity, high-uniformity linear light sources for continuous inspection on high-speed conveyor lines. When ultra-long linear light is needed, a specialized One into more outlet optical fiber assembly allows a single high-power illuminator to deliver balanced light across multiple output branches, or conversely, accept multi-branch inputs to feed a single light guide. With cylindrical focusing lenses and diffusers, the light density and uniformity can be further improved.Semiconductor wafer inspection. Ring fiber optic light guides paired with microscope lenses provide coaxial illumination that minimizes shadows and highlights surface defects. Light projected uniformly from around the lens is particularly effective for detecting minor defects on mirrored or highly reflective surfaces. For semiconductor packaging inspection requiring dual-direction lighting, dual-branch fiber optic bundles are available. In tight spaces where mounting is difficult,metal tube fiber optic light guides offer a good alternative.Multi-station inspection. A single light source can feed multiple fiber bundles, distributing light to different stations. This reduces equipment costs and simplifies cabling.Highly reflective surfaces. Metals, glass, and other strongly reflective materials tend to produce glare under conventional lighting. Coaxial or low-angle illumination can suppress specular reflection and make defects clearly visible in the image.Flexible and curved surface inspection. FPC flexible boards have uneven surfaces that rigid lighting struggles to cover uniformly. Fiber optics can conform to curved surfaces, providing more consistent illumination. Fiber Optic Lighting vs. LED Lighting — How to Choose In practice, fiber optic lighting and LED lighting each have their place. It's not a matter of one replacing the other.Fiber optic lighting excels in flexibility — changing the light pattern is as simple as swapping a fiber bundle, without replacing the entire fixture. It adapts easily to tight installation spaces thanks to flexible light guidance. Its cold light feature is irreplaceable in heat-sensitive applications. Multi-station expansion is straightforward — one light source can feed multiple points. The downside is that the initial cost is slightly higher than basic LED solutions.LED lighting has a lower initial cost and works well for standard scenarios that don't require specialized light patterns. However, the light pattern is fixed, replacement costs are higher, and heat dissipation is a concern.In short, when the inspection scenario demands specific lighting angles or patterns, or when the sample is sensitive to heat, fiber optic lighting is the better choice. What to Consider When Selecting Fiber Optic Lighting How to choose the light pattern. Linear light pairs with line scan cameras — integrated with a high-uniformity Display Lighting Fiber Optic Cable, it is ideal for the continuous, high-speed inspection of PCBs, FPD modules, and glass substrates. Ring light provides coaxial illumination — eliminates shadows, suitable for mirrored and highly reflective surfaces. Area light provides large-area uniform illumination. Spot light provides pinpoint illumination for precision features.How to choose the fiber material. Quartz fiber offers high transmission efficiency (over 95%), a broad spectral range from UV to IR, and good temperature tolerance — suitable for applications with demanding optical quality requirements. Glass fiber offers good value for money — suitable for regular visible light inspection. Plastic fiber has the lowest cost and best flexibility — suitable for short-distance, low-cost applications.How to determine length. Length should be based on the routing path inside the machine. Standard lengths typically range from 1 to 5 meters, with special applications up to 10 meters. Longer lengths mean higher transmission loss — long-distance applications require consideration of end-face attenuation and low-loss fiber.How to match the connector. SMA905 is the most common fiber interface standard in the AOI field. Before selecting, confirm the interface type of your existing light source to ensure compatibility. Hecho Technology has been working in AOI fiber optic lighting for years, offering linear, ring, and area fiber optic light guides with full customization from light source to fiber bundle, including OEM and ODM services. Linear fiber optic light guides are available with illumination areas ranging from 50mm to 1260mm. Ring fiber optic light guides come in various diameters and output angles. All products use imported high-transmission fiber materials. As AOI inspection precision requirements continue to rise, fiber optic lighting — with its flexible light guidance, cold light, and pattern versatility — is well positioned to solve many long-standing lighting challenges. If you're dealing with non-uniform illumination, glare interference, space constraints, or thermal effects in your actual tuning work, fiber optic lighting is worth considering as a serious option.

A few months ago, I picked up the phone and heard a voice that sounded like it had been through the wringer. He was a medical device engineer, trying to source a custom fiber bundle for a handheld surgical laser. He’d already talked to three suppliers. The first one only sold off‑the‑shelf parts – no wiggle room. The second gave him a quote that was so high he actually laughed out loud, until he realised they weren’t joking. The third said “yes” to every single question he asked, but when he pushed them on UV transmittance and material consistency, they started reading from their own brochure like they were on autopilot. He said to me: “I feel like nobody actually wants to understand my problem. They just want to close the call and move on.” That stuck with me. Because I’ve been on both sides of that conversation for twenty years now. And honestly? He wasn’t wrong. A lot of suppliers out there treat custom work as a nuisance – unless you’re ordering a million pieces. So if you’re reading this, you’re probably in a similar spot. You need something that isn’t in any catalogue. You’ve been passed around, quoted crazy prices, or promised the moon by people who can’t answer basic material questions. Let me save you some pain – not by selling you anything, but by telling you what actually matters. First things first: before you dial a single number, sit down and figure out what you really need. I know that sounds like common sense, but you’d be amazed how many projects derail because someone started with “just give me a fiber” and we ended up in a forty‑email thread only to discover they needed a 90‑degree bendable light guide that survives 200°C. Ask yourself three things:What’s the light doing? Cutting, imaging, or sensing? That decides the core material – plastic, glass, hard cladding, soft cladding, all totally different.What wavelength are we talking? Some fibers are great in the near‑IR but act like a wall in the UV. Pick wrong and you lose 20% power before you’ve even turned the system on.And what’s the environment like? Tight bends, hot zones, chemical splashes – each one changes the jacket, the buffer, even the way we polish the end face. I never mind clients who ask a hundred questions. What scares me is the guy who says “you’re the expert, just do it” – because that’s when we end up building something that doesn’t fit his mechanical housing, and then it’s on me. A decent engineer will talk trade‑offs with you: “If we go with 0.39 NA, your bend radius can shrink to X, but you’ll lose a bit of coupling efficiency.” If your supplier only says “no problem” to everything – honestly, run. They either don’t know their own limits, or they’ll fix it later on your dime. Now, here’s a trap that catches a lot of people: the difference between OEM and private labelling. It’s blurred on purpose by some suppliers. Private labelling is when they take their standard product, slap your logo on it, and call it custom. That’s fine if that’s all you need. But true OEM customisation means they redesign the core diameter, the numerical aperture, the branching, the connectors – maybe even tool a new ferrule for you. That’s a whole different level of engineering. How do you tell them apart? Just ask: “Walk me through your design process.” If they quote you a price within ten minutes instead of asking about your optical path, your space constraints, or how many insertion cycles you need – they’re not an OEM, they’re a reseller with a nice website. I once got a quote in seven minutes from a “custom” shop. The sample they sent couldn’t even screw into our standard SMA connector. After that, I made a rule: no real technical conversation, no quote. Period. And while I’m at it – don’t go to a telecom fiber house for medical or industrial work. I know that sounds harsh, but hear me out. Telecom guys are brilliant at making light travel thousands of kilometres with minimal loss. Their whole world is about distance and bandwidth. Medical and sensing applications? We need stable power at a specific wavelength, mechanical flexibility, and drift‑free performance over thousands of cycles. Completely different mindset. For example, we work mostly with plastic and glass fibers in core diameters from 0.25 mm to 2.0 mm, with NAs of 0.37 or 0.50. Why those numbers? Because decades of industrial and medical use have proven them rock‑solid. But a telecom engineer would look at that and say: “That’s huge – our single‑mode is nine microns.” You see the gap? It’s not about who’s smarter – it’s about whose experience matches your problem. So ask them straight: “What non‑telecom projects have you done?” If they start talking about data centres and base stations, you know they’re not the right fit. Quality control is another thing that people don’t talk about until something breaks. I had a customer once tell me: “I don’t care about your ISO certificate. I care that every time I step on the pedal, the laser fires and the power doesn’t drift by more than 5%.” He was absolutely right. Because in surgery, a failed fiber isn’t a return – it’s an incident. So here’s what I look for when I’m evaluating a supplier (and I do evaluate them, even though I run one).Do they give you insertion loss and transmission data for each batch? Real numbers, not just “pass/fail”.Do they tell you where their raw materials come from? For us, we use Heraeus preforms from Germany for quartz – they’re more expensive, but they give consistent refractive index batch after batch. Cheap stuff drifts, and drift kills repeatability.And are they willing to build prototypes and run destructive tests with you? Bend‑cycle, pull‑strength, thermal cycling – if you set the spec, they should run it alongside you, not hand you a generic test report. We once had a client who showed up with their own three‑page test protocol and said: “Run these, and if you pass, we’ll order.” I loved that. It meant they knew exactly what they needed and they weren’t going to let anyone cut corners. Let me tell you a real story from our bench – not a polished case study, but the messy truth. That frustrated engineer I mentioned earlier? He ended up working with us. His handheld probe needed a fiber bundle that could survive a 15 mm bend radius inside the handle. Standard quartz started losing light badly at 20 mm – we measured it, and it was ugly. First try: we used a regular 0.22‑NA core. Bend loss came in at over 30%. He rejected it immediately, and I don’t blame him.Second try: we switched to a 0.39‑NA larger core. Loss dropped, but now the end‑face was getting too hot at the laser coupling point – temperature went out of spec. He went silent for a week. I honestly thought we’d lost him to a competitor.Third try: we changed the core material, added an anti‑reflective coating on the end‑face, and re‑balanced the branch lengths to spread the thermal load. Finally, bend loss came down under 8% and temperature stayed within limits. Two months of back‑and‑forth, three prototypes, and a few sleepless nights. When he finally tested the samples and sent me a voice message saying “That’s it – we’re good to go for clinical trials” – I felt like we’d earned every bit of that. Did we make money on that job? On pure time, no. But we earned the trust that next time he has a tight‑bend problem, he won’t bother calling anyone else. So that’s our niche, if you want to call it that. We’re not the biggest, and we don’t chase telecom mega‑orders. We’ve been at this since 2005 – twenty years of doing one thing: specialty optical fiber for non‑telecom applications. Medical, industrial, research. We keep our core diameters in that 0.25–2.0 mm range with NAs of 0.37 and 0.50 – not because we can’t do others, but because we’ve refined these to the point where we know exactly how they behave in real‑world conditions. We do everything in‑house – polishing, overmoulding, branching, you name it. No subcontractors to blame if something goes wrong. And we use Heraeus preforms for quartz and imported high‑transmission plastics – not as a marketing bullet, but because we’ve seen too many projects fail from material inconsistency. We take the jobs that standard suppliers say “no” to. The ones that need engineering from scratch, not a part number swap. If you’re stuck on a fiber selection or a tricky assembly, give us a call. Don’t worry about budget first – just walk us through your optical path and your mechanical constraints. Even if we don’t end up working together, I’ll make sure you leave with a few traps to avoid. That’s just how we do things. Nanjing Hecho Technology Co., Ltd.Specialty Optical Fiber Transmission Solutions – Medical · Industrial · Research 📞 +86-25-52374096📧 sales@gohecho.cn🌐 www.gohecho.cn

How a glass connector is reshaping the economics of optical interconnects In June 2026, Corning unveiled something that caught the attention of the optical communications industry. At the AI Data Center Optical Communications & Interconnect Technology Conference in Seoul, the company introduced GlassBridge — a next-generation glass-based optical interconnect component. It’s not a new optical transceiver. It’s not a new fiber. It’s a glass optical connector designed to solve one of the industry’s most persistent engineering challenges: getting light from an optical fiber precisely into a photonic chip. The Problem The core diameter of a standard optical fiber is about 125 microns — roughly the thickness of a human hair. The optical waveguides inside a photonic integrated circuit (PIC), by contrast, are only a few hundred nanometers wide. The size mismatch is on the order of dozens of times. Getting light from the fiber into the chip is like trying to drive a highway-width vehicle into a single-car garage — miss by a micron and nothing works. The conventional solution — fiber array units (FAU) with active alignment — is precise, expensive, and inefficient. As channel counts rise, assembly complexity increases exponentially. Corning’s Solution: Writing Optical Paths into Glass Corning’s approach is surprisingly direct: write the optical paths directly into the glass. Using a wafer-scale ion-exchange waveguide process, the company creates embedded optical waveguides inside a precision glass substrate. Plug in the fiber, and the optical signal automatically travels along the pre-designed glass pathways into the PIC. No more precision alignment of every single channel — the glass does the alignment for you. Key Specifications: Supports over 24 optical channels per connector Coupling loss as low as 1.5dB (O-band) Passive alignment — no active optical feedback required during assembly Detachable and rematable with standard TMT ferrule interface Wafer-scale manufacturable design supporting high-volume production Why the Market is Paying Attention GlassBridge sits at the intersection of three major trends: Co-Packaged Optics (CPO) — where optics are integrated directly with switching ASICs, creating extreme density requirements. GlassBridge provides the physical interface that makes fiber-to-PIC connection manufacturable at scale. Glass Substrate Packaging — glass is replacing traditional organic substrates in high-end AI chip packaging. In January 2026, Intel announced the world’s first commercial CPU using a glass core substrate. AI Data Centers — after the 800G and 1.6T transceiver race, the competitive battleground is shifting from “module speed” to “connectivity architecture.” Corning’s ambition extends beyond a single connector. The company also introduced the GlassWorks AI Platform, covering optical fiber, cable, connectors, waveguides, and CPO packaging — a full-stack solution for AI data center optical interconnects. The market has taken notice. According to LSEG data, Corning’s stock has risen approximately 275% over the past year — the market is re-pricing this century-old glass company as a core AI infrastructure player. From “Kilometers” to “Channels” — A Structural Shift Beyond the product itself, GlassBridge signals something deeper: the value chain in optical communications is undergoing a structural shift. For decades, the optical fiber industry competed on capacity, cost, and scale — fiber sold by the kilometer. GlassBridge represents the next generation of optical interconnect components, where value is measured in a different unit: channels. With over 24 optical channels per connector, each channel is an independent optical signal path. The competition is no longer about production capacity — or even just process technology. It’s about integration design capability: how to route more channels in a constrained space, how to “write” precise optical paths inside a material, how to make connections detachable and manufacturable. Value is migrating from “the fiber itself” to “fiber + precision connection + intelligent packaging” as an integrated solution. Those who can deliver more value along this chain will capture higher margins. And the core material driving this migration? Still glass — high-purity, low-loss, micro-machinable glass. Why Glass Matters Corning’s choice of glass as the interconnect substrate is no accident. Glass offers superior optical transparency, thermal stability, and dimensional precision — enabling optical path control at the micron and nanometer scale. These are exactly the material properties required for routing optical signals from fiber into chip. For the optical transmission industry, this is nothing new. At the heart of specialty optical fiber is the same thing: the optical performance of glass materials. Optical signals traveling through fiber are essentially propagating through a glass medium. The material’s optical transmittance, refractive index uniformity, temperature resistance, and long-term stability directly determine a fiber product’s transmission efficiency and reliability. Corning writes optical paths into glass. What we do is transmit optical signals stably through glass fiber. The material is the same. So is the commitment to optical quality. What This Means for the Optical Transmission Industry Corning’s GlassBridge launch signals a clear trend: the explosive growth of AI computing is pulling optical interconnect demand from “between data centers” into “inside chip packages.” Three implications for the industry: 1. Demand for precision optical connections is rising. CPO and glass substrate packaging require far higher levels of fiber component precision, end-face quality, and customization than traditional communication fiber. This is no longer about “selling fiber” — it’s about delivering “fiber + connector + end-face processing” as an integrated package. 2. Quality standards are moving up. Fiber components used in AI chip packaging face cleanliness, reliability, and consistency requirements approaching semiconductor-grade levels. 3. Customization opportunities are expanding. Corning’s solution focuses on the chip packaging side of optical interconnect. But on the transmission side — from fiber to connector — there is equally significant demand for precision optical manufacturing capabilities. This is where specialty fiber companies have an opportunity. Hecho Technology has been deeply involved in specialty fiber for years, with products covering silica fiber, glass fiber, and plastic fiber across medical laser, industrial machine vision, semiconductor inspection, and research optics applications. From material selection to precision processing, from end-face treatment to volume delivery — in the optical transmission and connectivity chain, this is what we do. Final Thoughts The buzz around GlassBridge looks, on the surface, like capital markets chasing the next hot product. But the real signal worth watching is this: optical interconnects are moving from “between racks” to “between chips” — a long-cycle shift measured in years, if not decades. For the optical transmission industry, this means more custom fiber components, tighter quality requirements, and a larger addressable market. Corning wrote optical paths into glass. We’re making optical transmission more solid, more reliable, more capable. Nanjing Hecho Technology Co., Ltd.Specialty Optical Fiber Transmission Solutions — Medical · Industrial · Research 📞 +86-25-52374096📧 sales@gohecho.cn🌐 www.gohecho.cn