C-LIGHT has independently developed the 100G OTU4 BiDi single-fiber bidirectional QSFP28 optical module, which supports data transmission rates of 112Gb/s and 100Gb/s, and supports a variety of single-fiber bidirectional transmission distances, mainly including 2km, 10km, 20km, 40km, and 80km. Its communication protocol complies with IEEE 802.3bm; the interface protocol complies with SFF-8636/8665; and the packaging protocol complies with QSFP28 MSA HW. This optical module is widely used in data center interconnection, long-distance optical fiber communication, telecommunication networks, medical fields, and other scenarios with high bandwidth requirements. The 100G OTU4 BiDi QSFP28 optical module is compatible with more than 100 switch brands, demonstrating C-LIGHT is 15 years of technical accumulation in the field of optical communications. We provide spot supply and customization services, and are committed to providing customers with original after-sales support to help reduce operating costs.