基于Mach-Zehnder滤波的可调谐光纤激光器  

Tunable fiber laser based on Mach-Zehnder filter

作　　者：丁香栋 何巍[1] 闫光[1] 骆飞[1] 祝连庆[1,2] 

机构地区：[1]北京信息科技大学光电信息与仪器北京市工程研究中心,光电测试技术北京市重点实验室,北京100016 [2]北京信息科技大学生物医学检测技术及仪器北京实验室,北京100192

出　　处：《激光与红外》2016年第9期1068-1072,共5页Laser & Infrared

基　　金：长江学者和创新团队发展计划(No.IRT1212);北京市重大科技计划项目(No.PXM2013-014224-000077,PXM2012-014224-000019);光电信息与仪器北京市工程研究中心开放课题(No.GD20150005)资助

摘　　要：为了实现高稳定性的可调谐激光输出,提出并设计了一种基于Mach-Zehnder（M-Z）滤波结构,结合Fabry-Perot（F-P）滤波器的可调谐掺铒光纤激光器,并对激光器的原理及实现方案进行理论分析和实验验证。所设计激光器系统的泵浦源工作波长为976 nm；长度5 m的掺铒光纤作为增益介质；采用全光纤M-Z结构进行滤波,并结合F-P滤波器实现单波长激光可调谐输出。实验中,通过调节F-P滤波器,在泵浦功率为60 mW时,实现了1547-1568 nm范围内单波长激光的稳定可调谐输出,波长调谐间隔小于1.7 nm,每个输出波长的边模抑制比均大于55 dB,线宽均小于0.1 nm。In order to realize a highly stable and tunable laser output,an Er^3＋-doped tunable fiber laser based on Mach-Zehnder filter structure and F-P filter is proposed. The theory of the laser was analyzed,and the feasibility was verified by the experiments. In the designed laser configuration,one 976 nm laser diode （LD） is used for pumping;an Er^3＋-doped fiber （EDF） of 5 m length is selected as the gain medium. A single longitudinal mode （SLM） laser output was realized based on all-fiber M-Z filter and F-P filter. In the experiment,when the pump power is 60 mW,a stable and tunable single wavelength tunable laser output with 1547-1568 nm is realized by adjusting the filter. The tunable spacing is less than 1.7 nm,and the side-mode suppression ratios （SMSRs） of each wavelength are more than 55 dB,and the line-width of the SLM output is less than 0.1 nm.

关 键 词：可调谐光纤激光器 M-Z滤波结构 掺铒光纤 F-P滤波器 

分 类 号：TN248[电子电信—物理电子学]