Title: Polarisation maintaining square shape photonic crystal fibre with high nonlinearity

Authors: Monika Kiroriwal; Poonam Singal

Addresses: Electronics and Communication Department, Deenbandhu Chhotu Ram University of Science and Technology, Sonepat, Haryana, India ' Electronics and Communication Department, Deenbandhu Chhotu Ram University of Science and Technology, Sonepat, Haryana, India

Abstract: A highly birefringent square shape photonic crystal fibre (S-PCF) with high nonlinearity has been simulated and studied. AlGaAs infiltrated slotted elliptical and rectangular cores are considered to identify the impact of core shape on optical properties. The light managing behaviour of the triangular meshed S-PCF is studied by employing the finite element method (FEM). Simulated results indicate that the slotted elliptical core is more compelling than the slotted rectangular core. Proposed PCF with high birefringence nearly to 0.46, high nonlinearity of 1.2 × 10⁵ W^-1km^-1, and high numerical aperture of 0.873 at 2 μm can be a prominent contender for a wide span of uses such as in nonlinear optics, polarisation-maintaining, sensing, and medical imaging.

Keywords: photonic crystal fibre; semiconductor nonlinear material; birefringence; nonlinearity; nonlinear optics; shape photonic crystal fibre; S-PCF; finite element method; FEM.

DOI: 10.1504/IJESMS.2024.140801

International Journal of Engineering Systems Modelling and Simulation, 2024 Vol.15 No.5, pp.240 - 247

Received: 09 Sep 2021
Accepted: 26 May 2022
Published online: 03 Sep 2024 *

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