Main amplifier of optical receiver module
The linear channel in optical receivers consists of a high-gain amplifier (the main amplifier) and a low-pass filter. In-line amplifiers: Periodically amplify signal due to fiber attenuation, high G, high Psat. Optical modules are devices used to connect network devices, transmit and receive data between network devices, and can be used to convert optical and electrical signals. In the intensity-modulation/direct-detection (IM-DD) system, the intensity modula-tion means that information is carried only by the intensity or power of the transmitted lightwave, not by its frequency or phase.
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