A projection operator approach for computing the dynamics of AS2S3 chalcogenide birefringent photonic crystal fiber coupler

TL;DR

This paper introduces a projection operator method to analyze the birefringent properties and polarization control in AS2S3 chalcogenide photonic crystal fiber couplers, revealing how input polarization angles influence coupling dynamics.

Contribution

It presents a novel application of the projection operator method to derive equations of motion for birefringent fiber couplers, enabling enhanced control of polarization and splitting ratios.

Findings

Polarization amplitudes are affected by input polarization angles.

Selective input angles allow control over splitting ratios.

Method provides insights into birefringence effects in photonic fibers.

Abstract

A variety of AS2S3 chalcogenide photonic crystal fiber coupler of special properties are proposed to study the role of birefringence in all optical coupling characteristics based on the projection operator method (POM). The equations of motion describing the dynamics of the individual pulse parameters through x- and y-polarized modes are arrived at by employing POM from the coupled nonlinear Schr\"odinger equations. From the pulse parameter dynamics, it is observed that the amplitudes of the polarization components are significantly influenced by the pulse being introduced with different polarizing angle even at low input power level. Such a selective polarizing angles of the input pulse will provide efficient control over the desired splitting ratio as well as the ability to decide the desired polarization component.