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

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dc.contributor.authorThomas, S.
dc.contributor.authorSingh, M.
dc.contributor.authorSatyanarayan, M.N.
dc.date.accessioned2026-02-04T12:27:46Z
dc.date.issued2022
dc.description.abstractA 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 TM1 mode shows a better response towards frequency tuning. © 2001-2012 IEEE.
dc.identifier.citationIEEE Sensors Journal, 2022, 22, 16, pp. 15916-15922
dc.identifier.issn1530437X
dc.identifier.urihttps://doi.org/10.1109/JSEN.2022.3188512
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/22452
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.subjectFinite element method
dc.subjectIII-V semiconductors
dc.subjectIndium phosphide
dc.subjectNatural frequencies
dc.subjectOptical resonators
dc.subjectOptical waveguides
dc.subjectPlasmonics
dc.subjectRefractometers
dc.subjectRing gages
dc.subjectSemiconducting indium
dc.subjectSemiconducting indium gallium arsenide
dc.subjectSemiconducting indium phosphide
dc.subjectConcentric dual ring
dc.subjectDual-ring
dc.subjectElectromagnetic waveguides
dc.subjectHigh sensitivity
dc.subjectRefractive index sensor
dc.subjectRing resonator
dc.subjectSemiconductor-insulator-semiconductor
dc.subjectSensitivity
dc.subjectTerahertz frequencies
dc.subjectTransmission characteristics
dc.subjectRefractive index
dc.titleHigh Sensitivity Refractive Index Sensor Based on Indium Antimonide Terahertz Plasmonic Ring Resonator

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