高频调制大功率窄线宽分布反馈光纤激光器  

High-frequency modulation,high-power and narrow-linewidth distributed feedback fiber laser

作　　者：薛力芳[1] 张强[1] 李芳[1] 周燕[1] 刘育梁[1] 

机构地区：[1]中国科学院半导体研究所,光电系统实验室,北京100083

出　　处：《物理学报》2011年第1期307-311,共5页Acta Physica Sinica

基　　金：第二批中国博士后科学基金(批准号:200902129);中科院知识创新工程国防科技创新重要方向项目(批准号:09JA011001);国家高技术研究发展计划(863计划)(批准号:2009AA03Z442)资助的课题~~

摘　　要：研制了一种窄线宽光纤激光器.在有源相移光栅后加一段掺铒光纤,当用980nm抽运光注入时,首先形成了分布反馈(DFB)光纤激光器,而残余抽运光将铒纤中铒离子从基态抽运到了激发态,对DFB激光实现了有效放大,实现了对残余抽运光的充分利用,节省了功耗、降低了成本;同时利用温控技术克服了DFB光纤激光器的温度敏感问题;将相移光栅黏贴于片状压电陶瓷(PZT)的表面实现了高频调制.实验研制的激光器的最高调制频率为2kHz、输出功率为15.6dBm,线宽为300kHz.A kind of narrow-linewidth fiber laser was developed. A segment of Er-doped fiber is connected after the active phase-shifted fiber grating. A distributed feedback （ DFB） fiber laser is realized using a 980 nm laser for pump. The erbium ions in the Er-doped fiber are pumped from ground-state to excited state by the residual pump power,so the output power of the DFB fiber laser is amplified effectively,and the pump power is fully used. In this way,the power consumption and the cost are reduced greatly. Temperature-control techniquc is used to deal with the temperature-sensitivity of the DFB fiber laser. The high-frequency modulation is realized by using a piezo-electric actuator when the phase-shifted fiber grating is mounted on its surface. In our experiment,the highest modulation frequency,the output power and the linewidth of the fiber laser are 2 kHz,15. 6 dBm and 300 kHz,respectively.

关 键 词：分布反馈光纤激光器 窄线宽 大功率 高频调制 

分 类 号：TN248[电子电信—物理电子学]