Nausheen, T.A.Nikhilesh Kumar, C.Khanna, A.Singh, M.2026-02-042024IEEE Transactions on Plasma Science, 2024, 52, 11, pp. 5432-5438933813https://doi.org/10.1109/TPS.2024.3506589https://idr.nitk.ac.in/handle/123456789/21345A 3-D-hybrid plasmonic waveguide (HPWG) cascaded ring resonator-based temperature sensor is studied in the infrared (IR) spectral regime. The proposed design achieves high sensitivity and precision in temperature measurements by integrating the unique properties of plasmonic and photonics. The HPWG enhances the interaction between the optical field and the surrounding environment, while the cascaded ring resonators provide a compact and efficient means of modulating the optical signal in response to temperature changes. Our theoretical analysis and numerical simulations demonstrate that the device exhibits a significant shift in resonance wavelength with temperature variations, leading to an enhanced sensitivity (0.37 nm/K) compared to traditional photonic sensors. The potential applications of this temperature sensor span various fields, including environmental monitoring, biomedical diagnostics, and industrial process control. It offers a promising solution for advanced temperature sensing with improved performance and miniaturization. © 1973-2012 IEEE.Photonic devicesPlasma diagnosticsRing gagesSilicon photonicsSilicon sensorsTemperature measurementDesign and analysisHybrid plasmonic waveguidesPlasma temperaturePlasmonic waveguidesRefractive index sensorResonator designRing resonatorTemperature detectionWaveguide-ring resonatorsTemperature sensors