大功率、高效率、高消光比铒光纤多波长超荧光光源  

Multi-wavelength Erbium-doped Superfluorescent Fiber Source with High Power,High Efficiency and High Extinction

作　　者：李家方[1] 陈胜平[1] 李乙钢[1] 吕可诚[1] 冯鸣[1] 闫培光[1] 朱剑平[1] 张炜[1] 

机构地区：[1]南开大学物理科学学院光电信息科学系,天津300071

出　　处：《光子学报》2005年第1期6-10,共5页Acta Photonica Sinica

基　　金：国家高技术研究发展计划 (2 0 0 3AA312 10 0 );国家自然科学基金 (6 0 1370 10 ;6 0 3770 10 )资助项目

摘　　要：采用改进的反射式Mach Zehnder干涉滤波器 ,对双程后向结构掺铒光纤超荧光光源 (DPBSFS)分别进行光谱分割和光谱预分割 ,构建了两种结构的多波长超荧光光纤光源 (MWSFS) ,波长间隔为～ 0 .8nm时 ,在 15 5 0nm附近 (15 42～ 15 5 9nm) 2 0个波长的功率波动小于 0 .5dB 其中前者消光比高达 2 7dB ;后者消光比～ 18dB ,在泵浦光功率为 72 .8mW时 ,最大输出功率 2 5 .3mW ,光光转换效率高达 34.8% 改变Mach Zehnder干涉仪的臂长差 ,采用光谱预分割技术 ,得到 15 5 0nm附近波长间隔～ 0 .4nm、消光比～ 16dB的 5Based on an erbium-doped double pass backward (DPB) superfluorescent fiber source (SFS), by employing a improved Mach-Zehnder interferometer filter (MZI) as spectrum slicing and spectrum pre-slicing component, respectively, two multi-wavelength superfluorescent fiber sources (MW SFSs) with channel spacing of ~0.8 nm are got. For the 20 channels around 1550 nm (from 1542 to 1559 nm), the power fluctuations are less than 0.5 dB. The extinction of the former is as high as 27~B, and the latter is ~18dB. With the latter schematic, output power as high as 25.3 mW with pump efficiency of 34.8% is achieved under a limited 980 nm pump power of 72.8 mW. By changing the difference of the arms of the Mach-Zehnder interferometer filter, 50 channels around 1550 nm with spacing of ~0.4 nm are got, and the extinction is ~16 dB.

关 键 词：超荧光光纤光源(SFS) 多波长 双程后向(DPB)结构 Mach—Zehnder干涉滤波器(MZI) 光谱分割 光谱预分割 

分 类 号：TN253[电子电信—物理电子学] TN248