Development and analysis of whispering gallery mode model for refractive index sensing

Abstract A refractive index sensor based on a whispering gallery mode resonator is numerically investigated in this paper. Whispering gallery mode resonators confine light and can be used in sensing applications, and this work presents the model built using COMSOL software to analyze their sensing p...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 2627; no. 1; pp. 12004 - 12011
Main Authors Batumalay, M., Zain, H.A, Rahim, H.R.A., Harun, S. W.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2023
Subjects
Mathematical models
Physics
Refractivity
Resonators
Sensitivity
Two dimensional models
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Summary:Abstract A refractive index sensor based on a whispering gallery mode resonator is numerically investigated in this paper. Whispering gallery mode resonators confine light and can be used in sensing applications, and this work presents the model built using COMSOL software to analyze their sensing performance. This work has investigated the WGM resonators’ response to refractive index changes numerically using 2D models in the refractive index ranges 1.000 and 1.333. The resonator showed a sensitivity of 167 nm/RIU in the refractive index range of 1.3331.4 and a sensitivity of 95 nm/RIU in the refractive index range of 1.000-1.010. The sensing resonator has potential applications for biological and chemical analytes.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2627/1/012004