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《Acta Photonica Sinica》 2017-07
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Polarization Splitter Based on Dual-Core Photonic Crystal Fibers Filled with Gold Wire

BAI Yu-kun;WANG Biao;Engineering Research Center of Communication Devices and Technology,Ministry of Education,School of Electrical and Electronic Engineering,Tianjin University of Technology;Key Laboratory of Optoelectronic Information Science and Technology,Ministry of Education,and Center for Terahertz Waves,College of Precision Instrument and Optoelectronics Engineering,Tianjin University;  
An ultra-short polarization splitter based on dual-core Photonic Crystal Fiber(PCF)with a gold wire filled into the air hole between the two cores has been proposed and analyzed with the finite element method.Surface Plasmon Polaritons(SPPs)excited on the surface of gold wire have strong resonant coupling with the guided core modes of PCF,which enables a short polarization-splitting length and broadband operation.Compared to its counterparts,the proposed polarization splitter exhibits a shorter length and higher Extinction Ratio(ER),simultaneously.Numerical results indicate that the 0.263 mm long polarization splitter can achieve an ER of-70 dB at the wavelength of 1.55μm with-20dB-ER bandwidth of 124 nm.
【Fund】: The National Natural Science Foundation of China(No.11004152);; the National Basic Research Program of China(No.2010CB327801)
【CateGory Index】: TN253
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