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How do optical transceivers function?

Views: 21 views Publish Time: 2022-06-14

The optical module is usually integrated with a transceiver, which has transmitting part and receiving part. The transmitting part modulates the electrical signal to the laser to achieve electro-optical conversion; while the receiving detector receives the optical signal to realize the photoelectric conversion.

The transmitting part is: the electrical signal input a certain code rate is processed by the internal driver chip to drive the semiconductor laser (LD) or light-emitting diode (LED) to emit the corresponding rate of modulation optical signal, its internal with optical power automatic control circuit, so that the output optical signal power remains stable. The receiving part is: a certain code rate of the optical signal input module by the light detection diode converted into electrical signals. After the preamplifier output the corresponding signal rate.
In the transmitting part, the input electric signal of a certain code rate is processed by the internal driver chip, which drives the semiconductor laser (LD) or light-emitting diode (LED) to emit the corresponding code rate of modulated optical signal, and the optical power automatic control circuit inside can make the output optical signal power remain stable.

At the same time, in the receiving part, the optical signal input module of a certain code rate is converted into an electrical signal by the light detection diode, and then output the signal of the corresponding code rate through the preamplifier.