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 (electrical). 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 (electrical). That is, metal medium communication represented by coaxial cables and network cables is gradually being replaced by optical fiber media. Optical modules are a core component of optical fiber communication systems. Its primary function is to achieve optoelectronic conversion by converting electrical signals into optical signals and vice versa.
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