The optical module is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic device includes transmitting and receiving parts.
The transmitting part is: the electrical signal with a certain code rate is processed by the internal drive chip and then drives the semiconductor laser (LD) or light-emitting diode (LED) to emit the modulated light signal of the corresponding rate. The internal optical power automatic control circuit makes The output optical signal power remains stable.
The receiving part is: the optical signal of a certain code rate is input into the module and then converted into an electrical signal by the light detection diode. The electrical signal of the corresponding code rate is output after the preamplifier, and the output signal is generally PECL level.
