Coupling characteristics of the high-polarization dual-core photonic crystal fiber with mixing air holes

A high-polarization dual-core photonic crystal fiber (PCF) with mixing air holes is designed. The full-vector finite element method and coupled-mode theory are used to investigate the birefringence, coupling length, dispersion characteristics, normalized power and extinction ratio of this fiber. Num...

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Bibliographic Details
Published inOptoelectronics letters Vol. 9; no. 2; pp. 127 - 131
Main Authors Cao, Ye, Cui, Dan-ning, Tong, Zheng-rong
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.03.2013
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Polarization Direction
Elliptical Hole
Photonic Crystal Fiber
Extinction Ratio
Coupling Length
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Summary:A high-polarization dual-core photonic crystal fiber (PCF) with mixing air holes is designed. The full-vector finite element method and coupled-mode theory are used to investigate the birefringence, coupling length, dispersion characteristics, normalized power and extinction ratio of this fiber. Numerical investigations demonstrate that by changing the structural parameters of the fiber, the birefringence is up to 1.48×10 −2 at 1.55 μm, the coupling lengths are 79 μm and 94 μm for x -polarized and y -polarized modes, the fiber has two zero dispersion points, and the dispersion is very flat at the ultra-wide waveband scope from 0.7 μm to 1.7 μm.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-013-2363-5