Abstract

A rectangular core photonic crystal fiber structure has been presented and analyzed for single-polarization single-mode operation. Single-polarization is obtained with asymmetric design and by introducing different loss for $x$-polarization and $y$-polarization of fundamental modes. Single-polarization single-mode operation of the proposed photonic crystal fiber is investigated in detail by using a full vector finite element method with an anisotropic perfectly matched layer. The variations of the confinement loss and effective mode area of $x$-polarization and $y$-polarization of fundamental modes have been simulated by varying the structural parameters of the proposed photonic crystal fiber. At the optimized parameters, confinement loss and effective mode area is obtained as 0.94 dB/m and $60.67{\mathrm{\mu m}}^2$ for $y$-polarization as well as 26.67 dB/m and $67.23{\mathrm{\mu m}}^2$ for $x$-polarization of fundamental modes, respectively, at 1.55 μm. Therefore simulation results confirmed that, 0.75 m length of fiber will be sufficient to get a $y$-polarized fundamental mode with an effective mode area as large as $60.67{\mathrm{\mu m}}^2$.

© 2016 Optical Society of America

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