An optical module is mainly composed of optoelectronic devices (including the optical transmitter and optical receiver), functional circuitry, and optical interfaces. A single fiber SFP, also known as a BiDi SFP, is designed precisely for this purpose—enabling bidirectional data transmission over a single strand of optical fiber. Unlike traditional SFP transceivers that require two fibers—one for transmitting and one for receiving—a single fiber SFP uses. In the era of 5G, AI, and high-speed data centers, optical modules serve as the core bridge for converting electrical signals to optical signals (and vice versa), enabling fast, reliable data transmission across networks.