Yu Zhangjun, Yang Jun, Yuan Yonggui, Li Hanyang, Hou Changbo, Hou Chengcheng, Zhang Haoliang, Tian Shuaifei, Lu Xu, Zhang Xiaojun, Jiang Fuqiang, Zhu Zheng, Zhang Jianzhong, Zhang Yu, Liu Zhihai, Yuan Libo
Opt Express. 2018 Nov 12;26(23):29712-29723. doi: 10.1364/OE.26.029712.
We present a high-resolution polarization crosstalk measurement method for polarization maintaining fiber (PMF) with considerable dispersion. The birefringence dispersion of the PMF severely degrades the spatial resolution of the distributed polarization crosstalk measurement. Conventional dispersion compensation methods are effective for modest birefringence dispersion coefficients (for instance, of 0.0014 ps/nm/km). We present an iterative matched filter (IMF) method to cope with the case of considerable birefringence dispersion. We measured the distributed polarization crosstalk of a PMF coil with a birefringence dispersion coefficient of 0.235 ps/nm/km. By applying the IMF method, we obtained a spatial resolution of 0.09 m at any position of the PMF (a maximum of 12.36 m without dispersion compensation).
我们提出了一种用于具有可观色散的保偏光纤（PMF）的高分辨率偏振串扰测量方法。PMF的双折射色散严重降低了分布式偏振串扰测量的空间分辨率。传统的色散补偿方法对于适度的双折射色散系数（例如0.0014 ps/nm/km）是有效的。我们提出了一种迭代匹配滤波器（IMF）方法来应对可观双折射色散的情况。我们测量了双折射色散系数为0.235 ps/nm/km的PMF线圈的分布式偏振串扰。通过应用IMF方法，我们在PMF的任何位置都获得了0.09 m的空间分辨率（无色散补偿时最大为12.36 m）。
