摘要
报道了一种非保偏光纤放大器自适应偏振转换系统,可以将非保偏光转换为线偏光。结合非保偏光纤放大器中的偏振演化机理以及偏振控制器的原理,建立了非保偏光纤放大器中自适应偏振转换的数学模型,分析了不同条件下输出消光比的变化。根据理论优化参数,采用基于并行梯度下降优化算法(SPGD)的自适应偏振转换手段对非保偏光纤放大器的偏振分量进行优化控制,使非保偏光纤放大器输出的消光比达到16.7 d B。
An adaptive polarization conversion system of non-polarization maintaining（PM） fiber amplifier is reported, which can convert any non- PM laser into linear polarized one. The model of adaptive polarization conversion system is established based on the principle of the controller and the mechanism of polarization evolution. The relationship of the output polarization extinction ratio at different conditions is analyzed. On the basis of the optimization results, the system achieves the polarization conversion of non-PM fiber amplifier with the output extinction ratio of 16.7 d B using adaptive polarization conversion technology to control the polarized component directly based on stochastic parallel gradient descent（SPGD） optimization algorithm.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2015年第9期67-71,共5页
Chinese Journal of Lasers
基金
湖南省自然科学基金(14JJ3004)
关键词
光纤光学
线偏光
偏振转换
偏振控制器
非保偏光纤放大器
随机并行梯度下降算法
fiber optics
linear polarized light
polarization conversion
polarization controller
non-polarization maintaining fiber amplifier
stochastic parallel gradient descent algorithm
