Waveguiding properties and applications of silica nanowires in various environments |
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Authors: | Cheng-hua Sui Ping-hui Wu Pan Zhao |
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Affiliation: | (1) Department of Applied Physics, Zhejiang University of Technology, Hangzhou, 310023, China |
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Abstract: | Waveguiding properties of silica nanowires in various environments are studied by solving the eigenvalue equations of a circular cross-section waveguide numerically in cylindrical coordinates. The single-mode condition, propagation constants, poynting vector and power distribution inside and outside silica nanowire are calculated. The results show that silica nanowires in water, compared with silica nanowires in air, have higher fraction of the evanescent fields. Due to the sensitivity to surrounding environment, silica nanowires are very suitable for sensing elements, which can be used to implement a single-mode fiber optic evanescent wave sensing element of highly sensitive and accurate measurement. This work has been supported by Natural Science Foundation of Zhejiang Province (No. Y107547) |
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