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Numerical Simulation and Analysis on Mode Property of Photonic Crystal Fiber with High Birefringence by Fast Multipole MethodWei Song, Yuanyuan Zhao, Yu Bao, Shuguang Li, Zhiyuan Zhang, and Tianfu Xu doi:10.2529/PIERS060910211527 Downloads: 1459 Abstract:In this paper the mode property of a photonic crystal fiber with triangle-lattice array in a silica matrix has been simulated by fast multipole method. The PCFs studied in this paper have a silica core, obtained by introducing a defect, that is by removing three holes in the center of the fiber transverse section. The model fields, effective index and confinement loss about the fundamental mode in the fibre are analysed and compared. It is demonstrated that lower confinement loss and higher birefringence can be realized in the condition of fewer rings of air holes. At the wavelength of 1.55 μm the confinement loss is 7.3×10-6 dB/m and the birefringence is 1.65×10-3 in this fiber. 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