Coupling characteristics of high birefringence dual-core As_2S_3 rectangular lattice photonic crystal fiber  

作　　者：刘硕 李曙光 尹国冰 王晓琰 

机构地区：[1]Key Laboratory of Metastable Materials Science and Technology,College of Science,Yanshan University

出　　处：《Chinese Physics B》2012年第3期289-293,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 10874145);the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091333110010);the Natural Science Foundation of Hebei Province, China (Grant No. F2009000481);the China Postdoctoral Science Foundation (Grant Nos. 20080440014 and 200902046)

摘　　要：A type of As2S3 chalcogenide glass mid-infrared dual-core photonic crystal fiber has been proposed. The dualcore photonic crystal fiber （PCF） consists of two asymmetric cores. The high polarization property and the coupling characteristics have been studied by using the finite dement method and mode coupling theory. Numerical results show that the birefringence at wavelength λ = 10 μm is up to 0.01386 and the coupling length can reach wavelength = 5 μm, 261 μm and 271.44 μm for x-polarized mode and y-polarized mode, respectively. It demonstrates that a 6.786-ram-long fiber can exhibit an extinction ratio of better than -10 dB and a bandwidth of 180 nm.A type of As2S3 chalcogenide glass mid-infrared dual-core photonic crystal fiber has been proposed. The dualcore photonic crystal fiber （PCF） consists of two asymmetric cores. The high polarization property and the coupling characteristics have been studied by using the finite dement method and mode coupling theory. Numerical results show that the birefringence at wavelength λ = 10 μm is up to 0.01386 and the coupling length can reach wavelength = 5 μm, 261 μm and 271.44 μm for x-polarized mode and y-polarized mode, respectively. It demonstrates that a 6.786-ram-long fiber can exhibit an extinction ratio of better than -10 dB and a bandwidth of 180 nm.

关 键 词：photonic crystal fiber BIREFRINGENCE coupling length MID-INFRARED 

分 类 号：TN253[电子电信—物理电子学] TP393.09[自动化与计算机技术—计算机应用技术]