Au-coated tilted fiber Bragg grating twist sensor based on surface plasmon resonance

Au-coated tilted fiber Bragg grating twist sensor based on surface plasmon resonance

A fiber twist sensor based on the surface plasmon resonance (SPR) effect of an Au-coated tilted fiber Bragg grating (TFBG) is proposed. The SPR response to the twist effect on an Au-coated TFBG (immersing in distilled water) is studied theoretically and experimentally. The results show that the tran...

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Bibliographic Details
Published in:Applied physics letters Vol. 104; no. 7
Main Authors: Shen, Changyu, Zhang, Yang, Zhou, Wenjun, Albert, Jacques
Format: Journal Article
Language:English
Published: Melville American Institute of Physics 17-02-2014
Subjects:
Applied physics
Coating effects
Distilled water
Gold
Sensors
Surface plasmon resonance
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Summary:A fiber twist sensor based on the surface plasmon resonance (SPR) effect of an Au-coated tilted fiber Bragg grating (TFBG) is proposed. The SPR response to the twist effect on an Au-coated TFBG (immersing in distilled water) is studied theoretically and experimentally. The results show that the transmission power around the wavelength of SPR changes with the twist angle. For the twist ranging from 0° to 180° in clockwise or anti-clockwise directions, the proposed sensor shows sensitivities of 0.037 dBm/° (S-polarized) and 0.039 dBm/° (P-polarized), which are almost 7.5 times higher than that of the current similar existing twist sensor.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4865932