OPTICAL FREQUENCY MODULATION SIGNAL GENERATOR AND METHOD FOR GENERATING OPTICAL FREQUENCY MODULATION SIGNAL

摘要

PROBLEM TO BE SOLVED: To provide an optical frequency modulator which suppresses waveform distortion in a low frequency region without creating a semiconductor laser for special direct modulation.;SOLUTION: An optical frequency modulation signal generator comprises: at least one modulation means 20 for outputting a modulation signal modulated according to a transmitting signal; bias means 40 for multiplexing a bias signal into a modulation signal 20; and a semiconductor laser 50 driven using the modulation signal biased by the bias means 40. The modulation means 20 outputs a modulation signal not including a frequency component which is not more than a maximum frequency affected by a temperature effect of the semiconductor laser 50.;COPYRIGHT: (C)2015,JPO&INPIT