Research on Mode Hopping Detection of Ultra-narrow Line-width Lasers Based on the Visibility Change of Fiber Mach-Zehnder Interferometer
Author:
Affiliation:
MA Mingxiang,XU Pan,HU Zhengliang,YANG Huayong(College of Optoelectronic Science and Engineering,National University of Defense Technology,Changsha 410073,CHN)
As one type of disturbance or noise,random mode hopping of ultra-narrow line-width lasers is a significant factor that debases the performance of optical coherence detection system.In order to detect the mode stability characteristics of single-longitudinal-mode lasers with ultra-narrow line-width,a new method for detecting mode hopping based on fiber Mach-Zehnder interferometer with externally modulated phase generated carrier(PGC) is proposed.It transforms the entire mode hopping process to the visibility...
