Numerical analysis of a compact all-fiber polarization beam splitter based on dual-core photonic crystal fiber with As2S3 thin layer oleh Nan Chen, Xin Ding, Luyao Wang, Yiming Xu, Luhao Guo, Yanming Huang, Chenxun Liu, Yiran Xu, Wenhui Guo, Yunpeng Xiao, Wanglin Yue, Yuhe She