Optoelectronic transceiver module laser diode stabilizer and bias control method

摘要

A power stabilizer for maintaining a constant level of output power from a laser transmitter. The laser transmitter has a laser diode which produces a optical output which corresponds to the level of bias current received. In addition, the laser transmitter has a photodiode which produces a feedback signal which corresponds to the optical output power being produced by the laser diode. Furthermore, the power stabilizer consists of a digitally controlled potentiometer for producing a reference input signal and an op-amp for comparing the feedback signal and the reference input signal to produce a control signal to supply bias current.