Chu Lihua, Liu Min, Shum Ping, Fu Yongbo
Appl Opt. 2019 Oct 1;58(28):7892-7896. doi: 10.1364/AO.58.007892.
A polarization splitter based on dual-core photonic crystal fiber with ${{\rm Ge}{20}}{{\rm Sb}{15}}{{\rm Se}_{65}}$ glass is proposed to realize ultrashort length and high extinction ratio simultaneously at the common wavelength of 1.55 µm. The characteristics of the polarization splitter have been investigated by the finite element method. By tailoring the structure parameters on the performance of the splitter, the optimized parameters are obtained to analyze the birefringence, the coupling length, the normalized power transfer, and the extinction ratio. A comparison with other designs demonstrates the advantages of our polarization splitter, which can find potential applications in optical communication systems, optical fiber sensing, etc.
提出了一种基于具有${{\rm Ge}{20}}{{\rm Sb}{15}}{{\rm Se}_{65}}$玻璃的双芯光子晶体光纤的偏振分束器，以在1.55 µm的常用波长下同时实现超短长度和高消光比。采用有限元方法研究了该偏振分束器的特性。通过调整结构参数对分束器性能的影响，获得了优化参数，用于分析双折射、耦合长度、归一化功率传输和消光比。与其他设计的比较表明了我们的偏振分束器的优势，它可在光通信系统、光纤传感等领域找到潜在应用。
