The optical module is normally receiving and transmitting light
An optical module typically consists of an optical transmitter (TOSA, Transmitter Optical Sub-Assembly, containing a laser diode), an optical receiver (ROSA, Receiver Optical Sub-Assembly, containing a photodetector), functional circuits, and optical . 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. After the processing, the drive's semiconductor laser diode (LD) or light emitting diode (LED) emits modulated optical signals at the corresponding rate. Optical modules typically have an electrical interface on the side that connects to the inside of the system and an optical interface on the side that connects to the outside.
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