An optical module is composed of optical chips, an optical engine, and an electronic control unit, and whether the module contains analog chips (Analog Chip) depends on its design and application requirements. A standard optical module typically includes the following core. In the optical communication industry, optical modules (Optical Module) are the core integrated devices responsible for optical-electrical signal conversion and high-speed data transmission. It is the core device for connecting communication equipment with optical fibers. The optical module is usually composed of Transmitter Optical Subassembly (TOSA.