Ultra-high negative dispersion compensating circular–shaped PCF with highly birefringent and nonlinear characteristics for optical applications

摘要

Abstract This paper presents a novel GaAs-filled five-ring circular-coated photonic crystal fiber (PCF) architecture with highly birefringent and nonlinear characteristics. The elemental simulation analyses are carried out in the COMSOL software v5.5, employing the finite element method (FEM) with a perfectly matched layer (PML) boundary condition to scrutinize a wide range of optical properties, such as birefringence (Br), nonlinear coefficient (NLC), effective mode area (EMA), confinement loss (CL), dispersion, etc. The simulated findings illustrate that for the optimized structural parameters, an ultra-negative dispersion, as well as an ultra-high Br and NLC of 0.187 and 2.06 × 106 W−1 km−1 can be sequentially acquired at 1.55 µm wavelength. Further, the developed PCF with ultra-high Br and NLC properties is conveniently fabrication friendly, which is a beneficial factor for probable practical utilization in terms of biosensing applications, as well as supercontinuum generation, polarization maintaining, nonlinear optics and so forth.