Investigation of wide-range refractive index sensor based on asymmetric metal-cladding dielectric waveguide structure
Source abstract
Abstract
A refractive index (RI) sensor based on an asymmetric metal-cladding dielectric waveguide structure, in which an analyte is used as the guiding layer, is proposed in this report. The angular scanning attenuated total reflection spectra of the sensor and optical field distributions under waveguide mode resonance conditions were simulated, which confirmed that multiple waveguide modes can be used for sensing, and that different waveguide modes exist in different analyte RI ranges. The curves of both waveguide mode resonance angles and the sensitivity as a function of the analyte RI demonstrated that a wide sensing range can be achieved by combining waveguide modes of different orders. The proposed sensor could be applied to numerous fields, such as biological and chemical detection.
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Research context
OpenAlex topics: Photonic and Optical Devices · Advanced Fiber Optic Sensors · Mechanical and Optical Resonators
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Science, Lanzhou University of Technology 1 , Lanzhou 730050, China
College of Physics and Electronic Engineering, Northwest Normal University 2 , Lanzhou 730070, China
Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China 3 , Hefei 230026, China
Funding
The Student Science and Technology Innovation Fund Project of Lanzhou University of Technology · The Undergraduate Innovation Training Program of Lanzhou University of Technology · National Natural Science Foundation of China
References (27)
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