GIGALIGHT Granted Patent for Silicon Photonics-Based Parallel O-BAND DWDM Optical ModuleIt has recently been learned from the intellectual property authority that GIGALIGHT has been granted a utility model patent for a silicon photonics-based parallel O-BAND DWDM optical module, which was filed in June 2025.
By: GIGALIGHT O-BAND (defined by the ITU wavelength range of 1260 nm to 1360 nm) parallel DWDM is designed to address the challenges of system cost, power consumption, and latency in high-baud-rate, short- to medium-reach transmission applications. Before GIGALIGHT introduced its O-BAND non-coherent DWDM transmission architecture, the mainstream approach for high-baud-rate DWDM transmission in the industry was coherent transmission. At the same time, the trend of lightweight coherent technology extending into DCI applications has become increasingly evident. However, the inherent complexity of coherent technology brings challenges related to cost efficiency and latency in DCI interconnection scenarios, making it difficult to achieve an ideal cost-performance balance while also introducing non-negligible system latency. The O-BAND non-coherent DWDM optical module developed by GIGALIGHT not only provides cost advantages for short- to medium-reach DCI interconnections (although hyperscale data centers and AI infrastructure operators are not always solely focused on cost), but more importantly delivers significant system latency benefits. The greatest value of this solution lies in achieving the industry's lowest system transmission latency, which is critical for latency-sensitive applications such as AI training and real-time computing. O-BAND Non-Coherent DWDM: The Optimal Solution for High-Bandwidth Short- to Medium-Reach Transmission. About GIGALIGHT As an open optical networking explorer, GIGALIGHT integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company's product portfolio includes III-V optical modules, silicon photonics modules and silicon-based NPO/CPO engines, liquid-cooled optical modules, passive optical components, Active Optical Cables (AOCs), Direct Attach Cables (DACs), coherent optical communication modules, OPEN DCI BOX subsystems based on coherent and O-band DWDM optical modules, and UHD SDI video optical transceivers. GIGALIGHT focuses on applications including AI data centers, 5G transport networks, metropolitan WDM transmission, and ultra-HD broadcast and video, positioning itself as an innovative designer of high-speed optical interconnect hardware solutions. https://www.gigalight.com/ End
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