紧凑型窄线宽分布反馈光纤激光器  

Compact narrow-width distributed feedback fiber laser

作　　者：王宏杰[1] 翁宇佳[1] 胡野[1] 陈少甫[1] 吕福云[1] 

机构地区：[1]南开大学物理科学学院,天津300071

出　　处：《强激光与粒子束》2008年第6期891-893,共3页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(60677013);南开大学本科创新"百项工程"基金资助课题

摘　　要：在铒/镱共掺杂有源光纤上直接刻蚀光栅,制成一台紧凑型非对称π相移分布反馈光纤激光器。光栅总长度约50 mm,最佳相移位置在29 mm处,最佳耦合系数为150 m-1。采用980 nm激光二极管同向泵浦,当最大泵浦功率为200 mW时,在1550.94 nm处实现约10 mW激光输出,线宽小于0.05 nm,阈值约35mW,斜率效率为6.06%,总光-光转换效率为5%,基本满足长距离光通信系统光源功率实用化的要求。Directly etching an active grating in Er/Yb codoped fiber, a compact asymmetric π-phase-shifted fiber laser was fabricated. The designed grating length is only 50 mm, the optimal phase shift position is at 29 mm, and the optimal coupling coefficient value is 150 m^-1. Adopting forward pumped manner by 980 nm LD, when pumped power was of 200 mW, at 1 550.94 nm we have achieved the narrow-band laser output of 10 mW, its width was narrower than 0.05 nm, the threshold was 35 mW, the slope efficiency was 6. 06%, total optical conversion efficiency was 5%. The fiber laser has met the practicality of light sources power in the long-term optical communications system.

关 键 词：光纤激光器 光纤光栅 铒/镱共掺杂 相移位置 窄线宽 

分 类 号：TN248.1[电子电信—物理电子学]