Plasmonic Refractive Index Sensor and Plasmonic Bandpass Filter Including Graded 4-Step Waveguide Based on Fano Resonances
Source abstract
Abstract
A plasmonic refractive index sensor including a metal–insulator-metal (MIM) waveguide with four teeth is proposed. Transmittance (T), sensitivity (S), and figure of merit (FOM) were investigated numerically and analyzed via the finite difference time domain method (FDTD). The simulation results show the generation of double Fano resonances in the system that the resonance wavelength and the resonance line-shapes can be adjusted by changing the geometry of the device. This device is optimized by changing the length of the teeth and their distance from each other. As a result, the maximum sensitivity and FOM values are 1078 nm/RIU and 1.54 × 106, respectively. Due to proper performance and adjustable Fano resonance points, this structure is significant for fabricating sensitive refractive index sensor and plasmonic bandpass filter.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Photonic and Optical Devices · Advanced Fiber Optic Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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