Laser modulator digital automatic bias voltage control device
A laser modulator and automatic bias technology, applied in the field of communication transmission, can solve the problems of uncontrollable jump position of control voltage, large influence of filter discreteness, large change of phase delay, etc., and achieve good passband performance and phase The effect of small delay and increased locking speed
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[0035]Fig. 3 is a functional schematic diagram of the MZ modulator digital automatic bias control device of the present invention. The MZ modulator digital automatic bias control device in the present invention mainly includes a circuit control module, and a top-adjustment signal output port connected to the circuit control module for outputting a top-adjustment signal, and a DC output port for outputting a DC bias voltage. A bias voltage output port, a PD electrical signal input port for inputting PD electrical signals, and a communication interface for communicating with other devices. A signal PD electrical signal generated by the optocoupler in the laser modulator that can reflect the characteristics of the modulated output optical signal of the laser modulator is input to the circuit control module through the PD electrical signal input port, and the circuit control module is used to control the top adjustment signal and The operation of the DC bias voltage makes it consi...
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