Broadband directional coupler based on asymmetric dual-core photonic crystal fiber  

作　　者：陈明阳 张永康 祝远锋 佟艳群 周骏 

机构地区：[1]Department of Optical Engineering, School of Mechanical Engineering, Jiangsu University [2]Faculty of Science, Ningbo University

出　　处：《中国激光》2009年第3期635-639,共5页Chinese Journal of Lasers

基　　金：supported by the Senior Talent Foundation of Jiangsu University(06JDG062);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(08KJB510001);Qianjiang Talent Project of Zhejiang Province(2007R10015);the Science Foundation of Ningbo(2008A610001);the National Natural Science Foundation of China(10574058 and 50735001)

摘　　要：A novel broadband directional coupler based on an asymmetric dual-core photonic crystal fibet(PCF)is proposed.The asymmetry in the fiher is introduced by the enlargement of one air-hole in dual-core PCF.Numerical investigation demonstrate that broadband directional coupling with spectral width as large as 370 nm and polarization-dependent loss and uniformity lower than 0.2 and 0.5 dB,respectively,can be achieved.In addition,the proposed fiber shows large tolerance to the variation of the fiber parameters.In particular,the fiber length allows at least 10%derivation from the proposed fiber length of 7.7 mm.A novel broadband directional coupler based on an asymmetric dual-core photonic crystal fiber (PCF) is proposed. The asymmetry in the fiber is introduced by the enlargement of one air-hole in dual-core PCF. Numerical investigation demonstrate that broadband directional coupling with spectral width as large as 370 nm and polarization-dependent loss and uniformity lower than 0.2 and 0.5 dB, respectively, can be achieved. In addition, the proposed fiber shows large tolerance to the variation of the fiber parameters. In particular, the fiber length allows at least 10% derivation from the proposed fiber length of 7.7 mm.

关 键 词：directional COUPLERS PHOTONIC CRYSTAL FIBER asymmetric-core optical FIBER polarization-dependent loss UNIFORMITY 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]