, a network switch) sends an electrical signal to the optical module., 850nm, 1310nm, or 1550nm). As an essential component of optical fiber communication, optical modules are optoelectronic devices that facilitate the conversion between optical and electrical signals during the transmission process. An. The optical module, known as Optical Transceiver in English, is a general term for various module categories, including optical receiver modules, optical transmitter modules, optical transceiver modules, and optical forwarding modules. These modules typically consist of a laser or LED transmitter, a.