Design of low-confinement-loss and highly birefringent index-guiding photonic crystal fibers  

作　　者：ZHANG Fang-di XU Zheng-kai YE Pei-da 

机构地区：[1]East China Research Institute of Electronic Engineering, Hefei 230031, China [2]Key Laboratory of Optical Communication and Lightwave Technologies of Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《Optoelectronics Letters》2008年第3期188-192,共5页光电子快报（英文版）

基　　金：This work hes been is supported in part by National Natural Science Foundation of China (No. 60507007);the Program for New Century Excellent Talents in University (NCET, Min Zhang 2007)

摘　　要：We present a systematic scheme to achieve both high birefringence and low confinement loss in index-guiding photonic crystal fibers(PCFs) ,using a structurally-simple PCF with finite number of air holes in the cladding region. By increasing the size of the outermost-ring air holes in the cladding region,highly birefringent PCFs with low confinement loss can be successfully achieved. The design strategy is based on the fact that the modal birefringence of PCFs is dominated by the inner-ring air holes in PCF,which is verified by a full-vector finite element method with anisotropic perfectly matched layers. Numerical results show that modal birefringence in the order of 10-3 and confinement loss less than 0.1 dB/km can be easily realized in the proposed PCF with only four rings of air holes in the cladding region. We expect that such fibers will be much easier to be fabvicated than those with more air holes in the cladding region.

关 键 词：光纤 晶体 导向性 有限元分析 

分 类 号：TN253[电子电信—物理电子学]