(?The integrated optical transceiver module is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic devices include two parts: transmitting and receiving. The transmitting part is: the electrical signal inputting a certain code rate is managed by the internal driver chip to drive the semiconductor laser (LD) or light emitting diode (LED) to emit a modulated optical signal of the corresponding rate, and it has an automatic light efficiency control circuit inside. The output optical signal efficiency remains stable. The receiving part is: the optical signal with a certain code rate is converted into an electrical signal by the light detection diode after being input into the module. After the preamplifier, the electrical signal of the corresponding code rate is output, and the output signal is generally PECL level. At the same time, when the input optical efficiency is less than a certain value, an alarm signal will be output.)
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