光学学报, 2015, 35 (10): 1006006, 网络出版: 2015-10-08
零双折射温度敏感系数保偏光子晶体光纤研究
Study of Polarization-Maintaining Photonic Crystal Fibers with Zero Birefringent Temperature Sensitive Coefficient
光纤光学 保偏光子晶体光纤 双折射 温度敏感系数 fiber optics polarization-maintaining photonic crystal fibers birefringence temperature sensitive coefficient
摘要
分析了影响保偏光子晶体光纤(PM-PCF)双折射温度敏感性的因素,利用有限元法仿真研究了热光效应和热膨胀效应对典型的实心结构PM-PCF 双折射温度敏感系数的影响。结果表明在-150 ℃~+150 ℃的工作温度范围内,热光效应对双折射的影响可以忽略。得到了这种PM-PCF 双折射温度敏感系数与相邻空气小孔圆心距离Λ的多项式模型,在Λ =5.24 μm 时,双折射的温度敏感系数为零。制作了5 根不同Λ的PM-PCF 样品,采用基于混合Sagnac干涉仪的测量技术分别测试了样品光纤双折射值随温度的变化,在Λ=5.16 μm 时,双折射的温度敏感系数为零,与仿真结果吻合。
Abstract
The factors that affect the temperature sensitivity of typical polarization- maintaining photonic crystal fibers (PM-PCF) are analyzed. By using the finite elements method, the influence of temperature on the birefringence of the typical solid core PM- PCF is studied, which mainly includes thermo- optic effects and thermal expansion. The results show that the thermo- optic effects can be neglected and the temperature sensitivity of birefringence can be represented only by a polynomial function of the center distance of adjacent air holes Λ under the working temperature from - 150 ℃ to 150 ℃ . The birefringence increases with Λ and becomes zero at Λ =5.16 μm. The compact hybrid Sagnac interferometer is used to measure the birefringence of five PM-PCF samples with different Λ under different temperatures. The experimental results conform well to the simulation.
陆林, 杨远洪, 李红颖. 零双折射温度敏感系数保偏光子晶体光纤研究[J]. 光学学报, 2015, 35(10): 1006006. Lu Lin, Yang Yuanhong, Li Hongying. Study of Polarization-Maintaining Photonic Crystal Fibers with Zero Birefringent Temperature Sensitive Coefficient[J]. Acta Optica Sinica, 2015, 35(10): 1006006.