Single-polarization photonic crystal fibers with a multiplex structure

Abstract

A new kind of single-polarization photonic crystal fiber (PCF) is proposed. Two kinds of multi-component glasses and the air are selected as working materials. Through using the full vector finite element method (FEM) and the perfectly matched layers (PML), the polarization-maintaining characteristic and the confinement loss of the fiber are analyzed, respectively. In addition, the single-polarization region of the fiber around 1.55 ìm is discussed. Numerical simulations show that the fiber maintains single-polarization operation within the wavelength range of 1.421 1.696 ìm. The birefringence can reach 6.988×10⁻³, and the confinement loss is as low as 0.012 dB/m when 7 layers of ring holes are arranged in the cladding at ë=1.55 ìm.

Keywords

Photonic Crystal Fiber / Perfectly Match Layer / Single Polarization / Confinement Loss / Ring Hole

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