Journal
OPTICAL AND QUANTUM ELECTRONICS
Volume 53, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/s11082-021-03345-5
Keywords
Optical fiber sensor; Light sensing; Finite difference time domain (FDTD)
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A novel passive optical-fiber sensor based on surface plasmon resonance (SPR) was proposed and demonstrated, utilizing a configuration on metal-dielectric materials. The refractive index on ring and fiber is controlled by the FDTD method to shift the resonance wavelength of the fiber SPR. The experimental results based on fiber ring resonator show good agreement with numerical and measurements, opening a new path to optical fiber sensors.
We propose and demonstrate a novel passive optical-fiber sensor based on surface plasmon resonance (SPR) by fabricating a configuration on metal-dielectric materials. We use a single-mode fiber to harness the transmission light. In the proposed structure, the injected refractive index on ring and fiber is controlled by the FDTD method; thus, the resonance wavelength of the fiber SPR shifts. This is the mechanism of the proposed structure. We also investigate several performance parameters such as FOM, and sensitivity and by applying silicon optical fiber can improve the sensitivity. Comparing with the reported numerical and measurements based on an optical fiber structure, the experimental results based on fiber ring resonator present good agreement and therefore the proposed structure open a new path to optical fiber sensors.
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