Modelling and simulation of novel liquid-infiltrated PCF biosensor in Terahertz frequencies

The liquid-infiltrated photonic crystal fibre (LI-PCF) is proposed for guiding terahertz radiation. Geometrical asymmetry is achieved by introducing a large ellipse in the core. By filling the ellipse with liquid cocaine, the optical properties of the photonic crystal fibre (PCF) are theoretically e...

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Bibliographic Details
Published in:IET optoelectronics 2020-12, Vol.14 (6), p.411-416
Main Authors: Suhaimi, Nurul Awadah Nadiah Binti, Yakasai, Izaddeen Kabir, Abas, Emeroylariffion, Kaijage, Shubi, Begum, Feroza
Format: Article
Language:English
Subjects:
biosensors
birefringence
confinement factor
confinement loss
effective material loss
effective mode area
fibre optic sensors
finite element analysis
finite element method‐based COMSOL multiphysics software
frequency 1.0 THz
geometrical asymmetry
holey fibres
liquid cocaine
liquid‐infiltrated PCF biosensor
liquid‐infiltrated photonic crystal fibre
LI‐PCF
microwave photonics
near‐zero ultraflattened chromatic dispersion
numerical aperture
operating frequency
optical design techniques
optical fibre dispersion
optical fibre losses
optical properties
PCF‐based cocaine sensing
photonic crystals
Research Article
terahertz frequency
terahertz radiation
terahertz wave detectors
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Summary:The liquid-infiltrated photonic crystal fibre (LI-PCF) is proposed for guiding terahertz radiation. Geometrical asymmetry is achieved by introducing a large ellipse in the core. By filling the ellipse with liquid cocaine, the optical properties of the photonic crystal fibre (PCF) are theoretically examined using finite element method-based COMSOL multiphysics software. At an operating frequency of 1 THz, the proposed LI-PCF demonstrates a sensitivity of 87.02% and confinement loss in the order of 10−4 cm−1. The PCF also demonstrates extremely low effective material loss
ISSN:1751-8768
1751-8776
DOI:10.1049/iet-opt.2020.0069