单向运转的非对称π-相移DFB光纤激光器  

Asymmetric π-phase-shifted Unidirectional DFB Fiber Laser

作　　者：王宏杰[1] 魏岱[1] 朱辉[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：《光电子．激光》2007年第12期1407-1409,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60677013);博士点基金资助项目(2006011901)

摘　　要：对有源相移光纤光栅制成的非对称π-相移分布反馈(DFB)光纤激光器的最佳耦合系数和相移位置及其输出特性进行了讨论,分别采用同向、反向2种泵浦方式从实验上进行了验证。制备的Er-Yb共掺有源相移光栅总长度为50mm,最佳耦合系数为150m-1,最佳相移位置在29mm处。当980nmLD抽运功率为65mW时,在1549.42nm处实现了3mW的激光输出,斜率效率达到10%。连续开机工作2h以上,未观测到激光峰值波长漂移和自脉动现象。The optimal coupling coefficient value and phase-shift position of the distributed feedback（DFB） fiber laser made by active π-phase-shifted fiber grating were discussed, which were also demonstrated by experiments with co-pump and counter-pump configurations,respectively. An Er/Yb co-doped active phase-shifted fiber grating with an optimum grating length of 50 mm,coupling coefficient of 150 m^-1 and phase-shift position of 29 mm was fabricated. Under a LD pump power of 65 mW at 980 nm,a forward output power of 3 mW at 1549.42 nm was generated and the slope efficiency reached 10%. Meanwhile,during a 2 hours continuous operation, no phenomenon oflaser peak wavelength shifting or self-pulsing was observed.

关 键 词：ER-YB共掺 有源相移光纤光栅 耦合系数 相移位置 

分 类 号：TN253[电子电信—物理电子学]