OPTICAL FREQUENCY DETECTING APPARATUS, OPTICAL SPECTRUM ANALYZER AND OPTICAL SIGNAL PROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide an optical frequency detecting apparatus for accurately detecting an optical frequency over a wide band, an optical spectrum analyzer and an optical signal processor.;SOLUTION: The optical signal processor is provided with a laser light source 11, an optical frequency comb generator 12, an optical amplifier 13, a Fabry-Perot optical resonator 14, an optical coupler 15 for coupling a measured light and an optical frequency comb, an optical detector 16, an optical frequency detector 17 for detecting a beat frequency from an electrical signal, and a control processor 18 for outputting a signal for changing and controlling a comb interval in the optical frequency comb generated from the optical frequency comb generator, and detecting and processing a frequency of the measured light from the beat frequency detected by the optical frequency detector.;COPYRIGHT: (C)2007,JPO&INPIT