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Proceedings Paper

Dual-channel SPR fiber sensor by adjusting incident angle in fiber
Author(s): Zongda Zhu; Lu Liu; Yong Wei; Yaxun Zhang; Yu Zhang; Zhihai Liu
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Paper Abstract

We propose a novel dual-channel Surface Plasmon Resonance (SPR) fiber sensors based on the incident angle adjusting method. By grinding fiber tip to form wedge-shape with different angles, we can easier adjust the incident angle in fiber, and then the SPR wavebands will change corresponding. The simulation and experiment demonstrate that the SPR wavebands will red-shift with increasing of the fiber grinding angle. Based on this, we cascade two fiber tips whose grinding angles are 5° and 15° respectively. Under the tests of the refractive index (RI) range from 1.333 to 1.385, the SPR wavebands are 576~683nm and 677~955nm respectively. Therefore, we can demodulate SPR signal by wavelength division multiplexing (WDM) technology. Sequentially, we can detect two analytes simultaneously. This dual-channel SPR fiber sensor has important significance in the fields of multichannel liquid refractive indices and temperature selfreference measurements.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032392 (23 April 2017); doi: 10.1117/12.2267482
Show Author Affiliations
Zongda Zhu, Harbin Engineering Univ. (China)
Lu Liu, Harbin Engineering Univ. (China)
Yong Wei, Harbin Engineering Univ. (China)
Yaxun Zhang, Harbin Engineering Univ. (China)
Yu Zhang, Harbin Engineering Univ. (China)
Zhihai Liu, Harbin Engineering Univ. (China)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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