Hexagonal photonic crystal Fiber (H-PCF) based optical sensor with high relative sensitivity and low confinement loss for terahertz (THz) regime

Shuvo Sen, Md. Abdullah-Al-Shafi, Ashad Kabir

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This paper presents an analysis on a hexagonal cladding with a rotated-hexa core in photonic crystal fiber (H-PCF) based optical sensor formation with simultaneously minimal confinement loss and higher sensitivity for chemical sensing functions. The numerical assessment of the designed structure is achieved with the procedure of finite element method (FEM) and perfectly matched layers (PML) boundary condition in the comsol multiphysics software tool. As per FEM numerical analysis, the proposed PCF sensor presents the extreme relative sensitivity at 81.46%, 82.26% and 79.22% for three chemicals at 1 terahertz (THz) such as Ethanol (n = 1.354), Benzene (n = 1.366) and Water (n = 1.330), respectively. Moreover, at 1 terahertz (THz) the low confinement losses are 5.85 × 10−08, 6.07 × 10−08 and 5.84 × 10−08 dB/m for similar three chemicals. The effective area, the effective mode index and the total power fraction are also elaborately explained. Furthermore, we hope that our proposed structure can be operated intensely in the field of biomedical, bio-sensing experiments and industrial applications in terahertz (THz) waveguide technology.
Original languageEnglish
Article number100377
Pages (from-to)1-9
Number of pages9
JournalSensing and Bio-Sensing Research
Volume30
Early online date12 Sep 2020
DOIs
Publication statusPublished - Dec 2020

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