Research Article

FEM analysis of a highly birefringent modified slotted core circular PCF for endlessly single mode operation across E to L telecom bands

¹ Department of Electrical and Electronic Engineering, Rajshahi University of Engineering and Technology, Rajshahi 6204, Bangladesh
² Department of Electrical and Electronic Engineering, World University of Bangladesh, Dhaka 1230, Bangladesh
³ Department of Computer Science and Engineering, World University of Bangladesh, Dhaka 1230, Bangladesh
⁴ Department of Physics, COMSATS University Islamabad, Islamabad, Pakistan

^* Corresponding author: amit.rueten@gmail.com

Received: 30 May 2024
Accepted: 28 August 2024

Abstract

This paper describes an exceptionally high birefringent modified slotted core circular photonic crystal fiber (MSCCPCF). At the 1.55 μm telecommunication wavelength, the proposed fiber structure aims to achieve exceptional birefringence performance through the thoughtful placement of air holes and the incorporation of slots. The optical properties of the proposed MSCCPCF are rigorously simulated using the finite element method (FEM). The FEM simulations show high birefringence of up to 8.795 × 10⁻² at 1.55 μm. The suggested fiber exhibits single mode behavior in the E to L communication bands (V_eff < 2.405). Numerous geometric factors and their effects on other optical properties, such as birefringence, beat length (17.62 μm) and dispersion coefficient (−310.8 ps/(nm · km)) have been meticulously studied. The proposed fiber’s viability and potential uses are evaluated by analyzing modal features like nonlinearity (21.76 W⁻¹ km⁻¹), confinement loss (5.615 × 10⁻¹¹ dB/cm), and dispersion. The proposed fiber structure has potential for use in polarization-maintaining devices, sensors, and other photonic applications requiring high birefringence and tailored optical properties.