Journal
PHYSICA SCRIPTA
Volume 98, Issue 8, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1402-4896/ace388
Keywords
MIM waveguide; refractive index sensitivity; temperature sensitivity
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In order to improve the performance of subwavelength refractive index and temperature sensors, this paper proposes a subwavelength metal-insulator-metal (MIM) waveguide structure consisting of a sawtooth U-shaped cavity and a rectangular cavity based on surface plasmon polaritons. The transmission spectrum of the system is simulated using the finite element method (FEM) and verified with multi-mode interference coupled-mode theory (MICMT). The results demonstrate excellent sensing characteristics for the system, with a refractive index sensitivity of 1300 nm RIU-1, a figure of merit (FOM*) of 191.262, and a temperature sensitivity of 0.525 nm/& DEG;C. This indicates that the nano-plasma system is highly significant in refractive index and temperature sensing.
To improve the performance of subwavelength refractive index and temperature sensors, this paper proposes a subwavelength metal-insulator-metal (MIM) waveguide structure consisting of a sawtooth U-shaped cavity and a rectangular cavity based on surface plasmon polaritons. The transmission spectrum of the system is simulated using the finite element method (FEM) and verified with multi-mode interference coupled-mode theory (MICMT). The results demonstrate excellent sensing characteristics for the system, with a refractive index sensitivity of 1300 nm RIU-1, a figure of merit (FOM*) of 191.262, and a temperature sensitivity of 0.525 nm/& DEG;C. This indicates that the nano-plasma system is highly significant in refractive index and temperature sensing.
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