Coupling characteristics of high birefringence dual-core As2S3 rectangular lattice photonic crystal fiber

被引：5
作者：
Liu Shuo [1 ]
Li Shu-Guang [1 ]
Yin Guo-Bing [1 ]
Wang Xiao-Yan [1 ]
机构：
[1] Yanshan Univ, Coll Sci, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
来源：
CHINESE PHYSICS B | 2012年 / 21卷 / 03期
基金：
中国国家自然科学基金; 中国博士后科学基金; 高等学校博士学科点专项科研基金;
关键词：
photonic crystal fiber; birefringence; coupling length; mid-infrared; FINITE-ELEMENT-METHOD; LARGE-MODE-AREA; COUPLERS; PROPAGATION; DESIGN;
D O I：
10.1088/1674-1056/21/3/034217
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A type of As2S3 chalcogenide glass mid-infrared dual-core photonic crystal fiber has been proposed. The dual-core photonic crystal fiber (PCF) consists of two asymmetric cores. The high polarization property and the coupling characteristics have been studied by using the finite element method and mode coupling theory. Numerical results show that the birefringence at wavelength lambda = 10 mu m is up to 0.01386 and the coupling length can reach wavelength lambda = 5 mu m, 261 mu m and 271.44 mu m for x-polarized mode and y-polarized mode, respectively. It demonstrates that a 6.786-mm-long fiber can exhibit an extinction ratio of better than -10 dB and a bandwidth of 180 nm.
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页数：5
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