光纤光栅外腔半导体激光器的理论和实验分析  

Theory and Experiment Analysis of Fiber Grating External Cavity Semiconductor Lasers

作　　者：赵同刚[1] 任建华[1] 赵荣华[1] 吴永刚[1] 饶岚[1] 王丽丽[1] 林金桐[1] 吴炜[2] 郭永新[2] 

机构地区：[1]北京邮电大学北邮安立光电检测研究中心,北京100876 [2]辽宁大学物理系,沈阳110036

出　　处：《光电子．激光》2004年第10期1186-1189,1196,共5页Journal of Optoelectronics·Laser

基　　金：沈阳市科委基金资助项目(1022030 1 01)

摘　　要：从耦合模理论出发,结合激光原理,研究了光纤光栅外腔半导体激光器(FBG ECL)的理论模型,得到光纤光栅反射率的解析解。利用速率方程理论讨论FBG ECL的高频响应特性。根据等效腔模型,讨论了耦合系数对FBG ECL阈值特性的影响。指出存在最佳光纤光栅反射率,使得激光器不仅功率输出大,而且边模抑制比高。最后实测了不同反射率情况下激光器的激射光谱。The theory model of fiber Bragg grating external cavity semiconductor lasers (FBG-ECL) is studied based on mode coupled theory and principle of lasers, and the analytic solution of fiber grating reflectivity is given in this paper. Using rate equations, the high frequency response characteristic of FBG-ECL is taken into account. Utilizing equivalent external cavity approximation model, the influence of coupling coefficient on the threshold gain of FBG-ECL is discussed. Adopting best peak reflectivity will make FBG-ECL having high output power and high fine sidemode suppression ratio. The output spectra of FBG-ECL in different peak reflectivity are practically measured.

关 键 词：光纤光栅 外腔半导体激光器 FBG ECL 耦合模理论 边模抑制比 反射率 光谱 解析解 耦合系数 

分 类 号：TN248.4[电子电信—物理电子学] TN253