Method and device for optical power control

摘要

The present invention provides an optical power control method, which includes: monitoring the output optical power of the optical source, and determining whether the preset test control signal is received; when said preset test control signal is not received, modulating the lightwave output from said optical source with the data signal, and adjusting the bias current of said optical source according to the output optical power monitoring result of said optical source in order to implement the automatic optical power control; when the preset test control signal is received, starting the test and modulating the lightwave output from said optical source with the data signal, to which the test signal is added, while ignoring the output optical power monitoring result of said optical source and keeping the bias current of said optical source at the preset target value during the test. The present invention further provides an optical power control device.