间隔可调多波长光纤激光器的实验研究  

Multiwavelength Fiber Ring Laser with Selectable Grid Spacing

作　　者：李抒乐[1] 邵加峰[1] 沈启舜[1] 沈立君[1] 曹庄琪[1] 陈劲民[2] 吴至境[3] 桑明煌[3] 

机构地区：[1]上海交通大学物理系,上海200240 [2]广东海洋大学理学院,湛江524088 [3]江西师范大学物理与通信电子学院,南昌330027

出　　处：《光学学报》2007年第10期1802-1806,共5页Acta Optica Sinica

基　　金：上海市科学技术委员会发展基金(05DZ22006)资助课题

摘　　要：半导体光放大器（SOA）的非均匀加宽特性对产生多波长激光非常有利。本文对两段式立奥-萨尼亚克（Lyot-Sagnac）滤波器进行了详细的理论分析,实现了一种基于半导体光放大器的新型多波长光纤激光器。它利用立奥-萨尼亚克滤波器的波长选择性,在室温下得到了约18个具有30 dB信噪比的多波长激光输出。波长范围1556-1577 nm。通过调节立奥-萨尼亚克环内的偏振控制器,多波长激光的波长间隔可在两种国际电信联盟（ITU）标准波长间隔（0.4 nm和0.8 nm）间选择。这种构型的光纤激光器具有稳定性好、波长间隔可控、信噪比高等优点。The semiconductor optical amplifier has the feature of inhomogeneous broadening, which makes it an ideal gain medium for constructing multiwavelength fiber lasers. A novel multiwavelength fiber laser employing a semiconductor optical amplifier within a fiber ring cavity is proposed on the basis of the theoretical analysis of the Lyot-Saganc filter with two segments of polarization-maintaining fiber （PMF）. This fiber laser can generate 18-wavelength laser output with signal-to-noise ratio （SNR） 30 dB and wavelength through the wavelength selection by the Lyot-Saganc filter, ranging from 1556 nm to 1577 nm. The grid spacing of the output laser can be selected between ITU grid spacings, 0.4 nm and 0.8 nm, at room temperature by tuning the polarization controller in the Lyot-Saganc ring. This fiber laser has good tunability and stability with a high signal-to-noise ratio.

关 键 词：激光技术 光纤激光器 立奥-萨尼亚克滤波器 半导体光放大器 

分 类 号：TN24[电子电信—物理电子学]