Author:
Zou Meng,Dai Yuze,Xiao Xiangpeng,Zhao Weiliang,Shen Kai,Sun Qizhen,Zhao Luming,Yan Zhijun
Abstract
We present a compact sub-kHz-linewidth fiber laser with a weak FBG injection, which the laser has around 300 Hz linewidth. And the phase noise is suppressed by 20 dB and the relative intensity noise is reduced to -120 dB/Hz.