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High Sensitivity Refractive Index Sensor Based on Indium Antimonide Terahertz Plasmonic Ring Resonator

A high sensitivity refractive index semiconductor-insulator-semiconductor (SIS) waveguide with a ring resonator sensor at THz frequency is proposed. The topological study of the proposed filter is numerically simulated using the finite element method. A maximum sensitivity of 0.509 THz/ Refractive i...

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Published in:	IEEE sensors journal 2022-08, Vol.22 (16), p.15916-15922
Main Authors:	Thomas, Sherin, Singh, Mandeep, Satyanarayan, M. N.
Format:	Article
Language:	English
Subjects:	Cavity resonators Concentric dual ring Electromagnetic waveguides Finite element method Indium antimonide Optical ring resonators Optical waveguides Refractive index refractive index sensor Refractivity Resonant frequency ring resonator Rings (mathematics) semiconductor-insulator-semiconductor (SIS) Sensitivity Sensors Terahertz frequencies terahertz frequency Waveguides
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cited_by	cdi_FETCH-LOGICAL-c293t-29e039c00a29e8de652974785bdfb67119d0eee825f7bf01e86b8acc449757503
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container_issue	16
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container_title	IEEE sensors journal
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creator	Thomas, Sherin Singh, Mandeep Satyanarayan, M. N.
description	A high sensitivity refractive index semiconductor-insulator-semiconductor (SIS) waveguide with a ring resonator sensor at THz frequency is proposed. The topological study of the proposed filter is numerically simulated using the finite element method. A maximum sensitivity of 0.509 THz/ Refractive index unit (RIU) is obtained by filling the air-filled ring resonator cavity with different refractive index materials. Besides that, the transmission characteristics are studied by varying the structural dimensions and observed that the system can be treated as a frequency selective device. The device gets modified by incorporating another concentric ring inside the single ring. From the transmission characteristics, the multiple modes of the concentric dual ring are studied, and concluded that the even TM 1 mode shows a better response towards frequency tuning.
doi_str_mv	10.1109/JSEN.2022.3188512
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subjects	Cavity resonators Concentric dual ring Electromagnetic waveguides Finite element method Indium antimonide Optical ring resonators Optical waveguides Refractive index refractive index sensor Refractivity Resonant frequency ring resonator Rings (mathematics) semiconductor-insulator-semiconductor (SIS) Sensitivity Sensors Terahertz frequencies terahertz frequency Waveguides
title	High Sensitivity Refractive Index Sensor Based on Indium Antimonide Terahertz Plasmonic Ring Resonator
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