Zhang Yongning, Wu Zhiyang, Zhao Wanli, Wang Biyi, Liu Tongyu
Appl Opt. 2022 Feb 1;61(4):919-924. doi: 10.1364/AO.444941.
A linear self-reference spectral interferometry has been proposed to measure the distribution of polarization-maintaining photonic crystal fiber (PM-PCF) birefringence over a wide wavelength range combined with the soliton self-frequency shift and birefringence effect. The birefringence of PM-PCF is measured experimentally over the range of 800-970 nm, which is larger than 5×10 and shows a segmented change trend. The air micropore structure has a significant effect on the characteristics of PM-PCF, which makes it have a highly nonlinear coefficient, and at the same time, changes the dispersion and birefringence distributions of the PM-PCF. The distribution of PM-PCF birefringence, measured by experiment, provides a new dimension for the design of PM-PCF, which is helpful for a detailed fiber model and an iterative optimization of fiber structure.
一种线性自参考光谱干涉测量法已被提出，用于结合孤子自频移和双折射效应，在宽波长范围内测量保偏光子晶体光纤（PM-PCF）的双折射分布。在800-970nm范围内对PM-PCF的双折射进行了实验测量，其大于5×10且呈现分段变化趋势。空气微孔结构对PM-PCF的特性有显著影响，这使其具有高非线性系数，同时改变了PM-PCF的色散和双折射分布。通过实验测量得到的PM-PCF双折射分布为PM-PCF的设计提供了一个新的维度，这有助于建立详细的光纤模型和对光纤结构进行迭代优化。
