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26 August 2015 Design of single mode single polarization large mode area photonic crystal fiber
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Abstract
Recently, photonic crystal fibers have attracted significant attention for their applications in optical fiber communication systems. In some polarization sensitive applications photonic crystal fibers with single-mode and single-polarization are desirable. In this paper, a rectangular-core single-mode single-polarization large-mode-area photonic crystal fiber structure has been designed based on higher order mode filtering. The single-polarization is obtained with asymmetric design and introducing different loss for x-polarization and y-polarization of fundamental mode. Single-polarization single-mode operation of a highly bi-refringent photonic crystal fiber is investigated in detail by using a full-vector finite-element- method with anisotropic perfectly-matched-layer. At optimized parameters, the confinement loss and effective-mode-area is obtained as 0.9 dB/m and 927 μm2 for x-polarization as well as 12.53 dB/m and 921 μm2 for y-polarization of fundamental mode respectively at 1.55 μm. Therefore, 1.6 m length of fiber will be sufficient to get x-polarized fundamental mode with effective-mode-area as large as 927 μm2.
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Kishor Dinkar Naik, Than Singh Saini, Ajeet Kumar, and Ravindra Kumar Sinha "Design of single mode single polarization large mode area photonic crystal fiber", Proc. SPIE 9586, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IX, 95860H (26 August 2015); https://doi.org/10.1117/12.2187902
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