Square Ring Resonator based Photonic Crystal for Pressure Sensing

Sivakumar, S and Lakshmi, RV and Balaji, VR and Ibrar Jahan, MA and Hegde, G and Stanislaus, RJ (2023) Square Ring Resonator based Photonic Crystal for Pressure Sensing. In: 9th IEEE International Conference on Electronics, Computing and Communication Technologies, CONECCT 2023, 14-16 July 2023, Bangalore, India.

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Abstract

In this paper, a pressure sensor has been designed using Photonic Crystal (PC) which is two-dimensional (2D) in nature. The pressure sensor has improved sensitivity, resolution, and a detection limit in the range of 0 to 6 GPa. Silicon rods (nsi 3.46) are inserted in air on a square Silicon dioxide substrate (SiO2) in the 2D PC optical sensor. The Photonic Band Gap (PBG) for periodic dielectric rods of a particular dimension has been estimated using the technique of Plane Wave Expansion (PWE). A bus, Nano square resonant cavity (NSRC) and silicon rods inserted in air change refractive index with pressure. After specifying structural parameters like lattice constant and rod radius, functional characteristics including sensitivity, quality factor, resonant wavelength, and spectral line width have been analyzed using the method of Finite-Difference Time-Domain (FDTD). The refractive index and the Pascal pressure are linearly dependent. The proposed sensor offers higher sensitivity, quality factor, and compactness which are highly favored characteristics in Photonics. © 2023 IEEE.

Item Type:	Conference Paper
Publication:	Proceedings of CONECCT 2023 - 9th International Conference on Electronics, Computing and Communication Technologies
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Energy gap; Finite difference time domain method; Photonic band gap; Pressure sensors; Silica; Silicon oxides, 2-D photonic crystals; Detection limits; Photonic bandgap (PBG); Pressure sensing; Quality factors; Sensitivity; Silicon rods; Silicondioxide substrates; Square ring resonator; Two-dimensional, Refractive index
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	21 Dec 2023 04:50
Last Modified:	21 Dec 2023 04:50
URI:	https://eprints.iisc.ac.in/id/eprint/83543

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