Hexagonal lattice twin core photonic crystal fiber based chemical sensor

Abstract

In this Work, a chemical sensor based on tivincore photonic crystal fiber (TC-PCF) is presented. In the TCPCF structure's cross-sectional arrangement, two solid cores are positioned With a vertically aligned elliptical hole in between them. These cores are then filled With different chemicals, such as ethanol, benzene, and Water. The proposed sensor incorporates a unique configuration of elliptical air holes, Which provides it With a competitive advantage in achieving high sensitivity compared to other currently available structures. High birefringence is a distinctive feature of this sensor, Which operates based on the principle of mode coupling between its two fiber cores. Through the employment of the finite element method (FEM), We have conducted a quantitative analysis and simulation of the TC-PCF chemical sensor proposed. With a fiber length of 0.03 cm, the maximum sensitivity of 6667nm/RIU is obtained. With such small fiber length, our proposed TC-PCF design ivm help overcome the geometry restrictions towards its practical designing and fabrication, as compared to conventional PCFs. The primary goal is to deploy TC-PCF as a chemical sensor application in the industrial sector to identify dangerous chemicals.