基于高Q值氮化硅微环反射镜的窄线宽单模光纤激光器  

Narrow Linewidth Single Frequency Fiber Laser Based on High-Q Silicon Nitride Microring Reflector

作　　者：章元珏 李渔[1] 陈明华[1] ZHANG Yuanjue;LI Yu;CHEN Minghua(Tsinghua University, Beijing 100084, China)

机构地区：[1]清华大学,北京100084

出　　处：《中兴通讯技术》2017年第5期34-37,共4页ZTE Technology Journal

基　　金：中兴通讯股份有限公司的资助

摘　　要：实现了一种基于片上高Q值氮化硅(Si_3N_4)微环反射镜的单模光纤激光器。利用微环反射镜的窄线宽特性,可以在使用较长增益光纤的同时保证激光的单模激射。由于激光谐振腔的加长,可以得到更好的线宽特性。实验中,采用长度为12 cm的掺铒光纤作为增益介质。通过在掺铒光纤的两端分别使用布拉格光栅(FBG)和微环反射镜,构建了一个基于法布里-珀罗(FP)谐振效应的光纤激光器,微环反射镜的Q值达到2.5×105。获得了线宽为8 k Hz的单频激光输出。A single frequency erbium-doped fiber laser with an on-chip high-Qsilicon nitride(Si3N4)micro-ring reflector is demonstrated in this paper.As a result ofthe narrow bandwidth of the micro ring cavity,longer gain media can be employedand single-frequency lasing can still be realized,which is also beneficial for betterlinewidth performance.In our demonstration,the compact laser cavity is composedof an on-chip micro ring with a Q value of up to2.5x105,a12centimeters erbiumdoped fiber and a fiber Bragg grating(FBG).The linewidth of the laser output is about8kHz.

关 键 词：光纤激光器 集成光器件 微环 窄线宽 

分 类 号：TN248[电子电信—物理电子学]