Surface plasmon resonance in a bent single-mode fiber with a metallized cladding experimental research
- Authors: Dyshlyuk A.V.1,2, Mitsai E.V.2, Cherepakhin A.B.2, Vitrik O.B.1,2, Kulchin Y.N.1,2
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Affiliations:
- Far Eastern Federal University
- Institute of Automation and Control Processes, Far Eastern Branch
- Issue: Vol 43, No 8 (2017)
- Pages: 727-729
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/205615
- DOI: https://doi.org/10.1134/S1063785017080053
- ID: 205615
Cite item
Abstract
The processes of surface plasmon resonance excitation in a bent single-mode optical fiber with a metallized cladding have been studied experimentally. It is shown that, for a certain combination of the bending radius of an optical fiber and the thickness of a metal film, a strong coupling between the fundamental and plasmon–polariton mode is achieved through a whispering gallery mode supported by the fiber cladding, which leads to the formation of a resonance dip with a depth of ~30 dB or more in the transmission spectrum of an optical fiber loop. The position of the dip depends strongly on the ambient refractive index, which provides the possibility of refractometric measurements with a spectral sensitivity of ~5 μm/RIU and a resolution of ~4 × 10–6. Limits of measurement of the refractive index are determined by the operating spectral range and the bending radius of the optical fiber and are 1.42–1.44 for the setup used.
About the authors
A. V. Dyshlyuk
Far Eastern Federal University; Institute of Automation and Control Processes, Far Eastern Branch
Email: eugenemitsai@gmail.com
Russian Federation, Vladivostok, 690090; Vladivostok, 690041
E. V. Mitsai
Institute of Automation and Control Processes, Far Eastern Branch
Author for correspondence.
Email: eugenemitsai@gmail.com
Russian Federation, Vladivostok, 690041
A. B. Cherepakhin
Institute of Automation and Control Processes, Far Eastern Branch
Email: eugenemitsai@gmail.com
Russian Federation, Vladivostok, 690041
O. B. Vitrik
Far Eastern Federal University; Institute of Automation and Control Processes, Far Eastern Branch
Email: eugenemitsai@gmail.com
Russian Federation, Vladivostok, 690090; Vladivostok, 690041
Yu. N. Kulchin
Far Eastern Federal University; Institute of Automation and Control Processes, Far Eastern Branch
Email: eugenemitsai@gmail.com
Russian Federation, Vladivostok, 690090; Vladivostok, 690041