光栅参数对线性啁啾光纤光栅偏振特性的影响  

Influence of Grating Parameters on Polarization Properties of Linearly Chirped Fiber Bragg Gratings

作　　者：郭炳霞[1] 励强华[1] 

机构地区：[1]哈尔滨师范大学物理与电子工程学院,黑龙江哈尔滨150025

出　　处：《中国激光》2012年第B06期164-169,共6页Chinese Journal of Lasers

基　　金：黑龙江省自然科学基金（A200910）资助课题.

摘　　要：研究了单模线性啁啾光纤光栅的偏振相关损耗特性。运用耦合模理论和传输矩阵分析法推出了反射光的偏振相关损耗，并模拟了光栅的反射谱和偏振相关损耗随光栅参数和双折射量的变化曲线。模拟显示双折射值的变化对啁啾光栅偏振相关损耗的影响非常显著，尤其是在带边比较陡峭时。啁啾光栅的偏振相关损耗也受光栅的啁啾系数和调制深度的影响。这表明线性啁啾光栅的偏振相关损耗不光依赖光栅双折射量，还依赖其啁啾系数等其他参数。实验结果与理论模拟基本吻合。The wavelength dependency of polarization dependent loss （PDL） in reflection in linearly chirped fiber Bragg gratings （CFBGs） written in single mode fibers is studied. Using the coupled theory and transfer matrix, the evolution with wavelength of PDL as a function of the grating parameters and the birefringence value is analyzed. And simulation results show that the chirped grating polarization dependent loss is very significant as the birefringence changes, especially with steep sides. The chirp grating PDL is also affected by the chirp grating coefficient and the modulation depth, which indicates that the linear chirped grating polarization dependent loss is not only dependent on the grating birefringence, but also dependent on other parameters of the chirp coefficient and other parameters. Theoretical analysis and exoerimental results are matchable to each other.

关 键 词：光栅 线性啁啾光纤光栅 偏振相关损耗 耦合模理论 传输矩阵 双折射 

分 类 号：TN253[电子电信—物理电子学]