Stock for short：长盈通
Stock code：688143

Recently, Yangtze Optical Electronic Co., Ltd. (YOEC, stock code: 688143) successfully developed a series of device-grade polarization-maintaining (PM) fibers for communication applications, marking a significant breakthrough in the field of optical communication core components. These products address the urgent demand for high-speed and highly stable optical transmission solutions in the AI computing era. They not only overcome existing performance bottlenecks in transmission technology but also align closely with cutting-edge architectures such as Co-Packaged Optics (CPO), providing essential support for data center optical interconnects. Currently, CPO technology is still in its early commercialization stage and is expected to scale up between 2026 and 2027, mainly for hyperscale data centers and AI server clusters. YOEC’s device-grade PM fibers demonstrate excellent polarization-maintaining performance and ensure signal stability even under extreme conditions, providing a solid foundation for reliable CPO operation.

Leveraging deep industry insight and years of expertise in specialty fiber technology, YOEC has achieved innovations in fiber structure design, material optimization, geometric precision control, and performance evaluation. The company has introduced a diverse product portfolio tailored to different application scenarios, including:

Standard Communication Device PM Fiber – Suitable for conventional optical communication systems, offering excellent grindability, tapering performance, and long-term reliability, mainly for polarization-related components.

Small Mode Field Device PM Fiber – Specially designed with high numerical aperture and small mode field, enabling efficient coupling with silicon photonic chip waveguides. Ideal for fiber arrays and PM mode field adapters.

Bend-Resistant Device PM Fiber – Optimized for structure and material, maintaining high polarization and low loss even at a 5 mm bending radius. Suitable for compact device designs and complex cabling.

Short-Wavelength Device PM Fiber – Designed for 633 nm, 780 nm, 850 nm, 980 nm, and other wavelengths, featuring low loss and high polarization performance for coherent detection and specialized optical communications.

High-Temperature Device PM Fiber – With special coatings and materials, it operates stably in environments up to ~300°C.

Small-Diameter Device PM Fiber – Reduced diameter while maintaining high polarization performance, ideal for high-end applications requiring compact packaging.

These fibers are widely used in polarization-maintaining jumpers, fiber arrays, PM couplers, splitters, isolators, circulators, and other polarization-dependent devices. They serve key roles in optical communications, quantum communications, and high-speed data center interconnects, meeting the stringent polarization requirements of AI computing and data center networks.

While advancing technology, YOEC also emphasizes product quality and cost control. Through iterative R&D and supply chain optimization, the company improves performance while reducing costs, enabling large-scale adoption of PM fibers. This strategy not only accelerates the commercialization of CPO but also supports the sustainable development of the optical communication industry.

In the silicon photonics field, YOEC has already made strategic moves. On August 13, 2025, the company completed the acquisition of Wuhan Shengyisheng Optoelectronics Co., Ltd., further strengthening its Fiber Array Unit (FAU) capabilities and enhancing its end-to-end solution offerings.

Looking ahead, YOEC will continue to uphold the philosophy of “innovation-driven, quality first,” increasing R&D investment, reinforcing industry collaboration, and expanding the application boundaries of next-generation optical communication chip technologies. With AI computing demand on the rise, the market outlook for device-grade PM fibers is promising, and YOEC is well positioned to play a greater role in the global optical communication landscape.