基于六边形的双芯光子晶体光纤偏振分束器  

Dual-core photonic crystal fiber polarization splitter based on hexagon

作　　者：张怡 葛海波 吴昊 安文喆 ZHANG Yi;GE Haibo;WU Hao;AN Wenzhe(School of Electronic Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China)

机构地区：[1]西安邮电大学电子工程学院,西安710121

出　　处：《光通信技术》2020年第10期53-57,共5页Optical Communication Technology

基　　金：陕西省教育厅自然科学研究基金项目(2011JM8038)资助;陕西省重点产业链(群)项目(S2019-YF-ZDCXL-ZDLGY-0098)资助。

摘　　要：为了得到短长度、高消光比的偏振分束器,设计了一种基质为二氧化硅的六边形双芯光子晶体光纤(PCF)偏振分束器,利用全矢量有限元法和模式耦合理论对偏振分束器的耦合长度、耦合长度比、消光比和带宽进行了数值分析。研究结果表明:在波长1550 nm处,偏振分束器的长度为103.05μm,消光比高达117.78 dB,消光比大于20 dB的带宽为100 nm,覆盖了整个C波段以及S和L的大部分波段。In order to obtain a short-length polarizing beam splitter with a high extinction ratio,a hexagonal dual-core photonic crystal fiber(PCF)polarizing beam splitter based on SiO2 is designed.The polarizing beam splitting is performed using the full vector finite element method and mode coupling theory.The coupling length,coupling length ratio,extinction ratio and bandwidth of the filter were numerically analyzed.The research results show that at a wavelength of 1.55μm,the length of the polarization beam splitter is 103.05μm,the extinction ratio is as high as 117.78 dB,and the bandwidth of the extinction ratio is greater than 20 dB is 100 nm,covering the entire C-band and most of the S and L bands.

关 键 词：光子晶体光纤 偏振分束器 有限元法 耦合长度 消光比 

分 类 号：TN919[电子电信—通信与信息系统]