| 摘要 |
The present invention discloses a method and device for the bias control of a laser modulator. The method comprises: during startup of a laser modulator, inputting a linearly changing bias control voltage to the bias electrode of the laser modulator and obtaining the output optical power of the laser modulator so as to determine a bias control voltage corresponding to a preset operating point; then enabling a communication electrical signal to be input to the radio frequency electrode of the laser modulator, carrying out an amplitude modulation on the communication electrical signal by a low-frequency sinusoidal pilot signal, and inputting the determined bias control voltage to the bias electrode simultaneously; and sampling the output optical signals of the laser modulator, comparing the sampled optical signal with the pilot signal, and adjusting the bias control voltage input to the bias electrode according to the result of the comparison. |
