Affiliation:
1. School of Modern Post, Beijing University of Posts and Telecommunications, Beijing 100876, China
Abstract
A nanoscale plasmonic temperature sensor via a metal-insulator-metal (MIM) structure is proposed in this paper, and the waveguide structure is composed of a coin-like resonator. The finite element method (FEM) is used to study the structure’s transmission characteristics and electromagnetic field distributions. The calculated maximum temperature sensitivity is about 0.38 nm/°C, and the figure of (FOM) merit can be as high as 30,158, higher than most of the published MIM structure research. Compared to the structure without a square resonator, the FOM is enhanced by about 479%. We believe the proposed sensor can be a promising platform for future sensing applications such as filters, absorbers, and splitters.
Subject
Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics