Design of a fiber polarizer based on an asymmetric dual-core photonic crystal fiber

We propose a novel optical polarizer based on an asymmetric dual-core photonic crystal fiber（PCF） with triangular lattice air-holes.The fiber is designed as that the effective indices of modes in the two cores are matched at one polarized state but mismatched at another polarized state.As a result,o...

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Bibliographic Details
Published inOptoelectronics letters Vol. 7; no. 4; pp. 253 - 255
Main Author 孙兵 陈明阳 于荣金 张永康 周骏
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.07.2011
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
偏振态
偏振片
光子晶体光纤
光子晶体纤维
光束传播法
双核
设计
非对称
Effective Index
Photonic Crystal Fiber
Large Core
Small Core
Extinction Ratio
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Summary:We propose a novel optical polarizer based on an asymmetric dual-core photonic crystal fiber（PCF） with triangular lattice air-holes.The fiber is designed as that the effective indices of modes in the two cores are matched at one polarized state but mismatched at another polarized state.As a result,one of the polarization states is coupled to the other core and transferred into a high-order mode.The transmission properties of the polarizer are investigated by the semi-vectorial beam propagation method（SV-BPM）.Numerical results demonstrate that a device length of 11.3 mm shows extinction ratio as low as-20 dB with bandwidth as great as 80 nm ranging from 1.51 mm to 1.59 mm.
Bibliography:12-1370/TN
We propose a novel optical polarizer based on an asymmetric dual-core photonic crystal fiber（PCF） with triangular lattice air-holes.The fiber is designed as that the effective indices of modes in the two cores are matched at one polarized state but mismatched at another polarized state.As a result,one of the polarization states is coupled to the other core and transferred into a high-order mode.The transmission properties of the polarizer are investigated by the semi-vectorial beam propagation method（SV-BPM）.Numerical results demonstrate that a device length of 11.3 mm shows extinction ratio as low as-20 dB with bandwidth as great as 80 nm ranging from 1.51 mm to 1.59 mm.
SUN Bing,CHEN Ming-yang,YU Rong-jin,ZHANG Yong-kang,and ZHOU Jun 1.Department of Optical Engineering,School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China 2.School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China 3.Faculty of Science,Ningbo University,Ningbo 315211,China
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-011-0077-0