Temperature Sensor Based on Terahertz Plasmonic Slot Waveguide Coupled with a Resonator
Subject Areas : electrical and computer engineering
Alireza
Dolatabady
1
( Ayatollah Boroujerdi University)
Keywords: InSb, plasmonic, resonator, temperature sensor, terahertz,
Abstract :
In this paper, the performance of a temperature sensor based on plasmonic structure including a slot waveguide coupled with a stub resonator has been investigated. The results have been attained based on the dependency of dispersion equation, and so, the resonance frequency of the stub, to electric permittivity of the constructing material of the structure, InSb, which is also dependent to the ambient temperature. The design of the structure has been carried out for frequencies in terahertz spectra. The simulation results confirm an approximate linear relation between the resonance frequencies and ambient temperature, between 260-350 Kelvin. Also, a criterion has been assigned for evaluation the sensitivity and the performance temperature span of the proposed sensor. The calculated sensitivity is about 1×10-10 Kelvin per Hertz in the mentioned temperature interval. The sensor measurement resolution depends on the frequency resolution of the detection system. This simple sensor can be utilized in various chemical and bio systems.
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