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Proceedings Paper

Two-dimensional fiber-optic vector vibroscope using only one multi-mode tilted fiber grating
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Paper Abstract

Orientation-recognized two-dimensional vibration sensor based on a polarization-controlled cladding-to-core recoupling is demonstrated experimentally. A compact structure in which a short section of multi-mode fiber stub containing a weakly tilted fiber Bragg grating (TFBG) is spliced to another single-mode fiber without any lateral offset. Several well defined lower-order cladding resonances in reflection show different polarization dependence due to the tilted grating vector excitation. Both orientation and amplitude of the vibration can be determined unambiguously via dual-path power detection of the orthogonal-polarimetric odd-cladding-modes. Meanwhile, the unwanted power fluctuations and temperature perturbations can be definitely removed via core mode monitoring.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842122 (17 October 2012); doi: 10.1117/12.970483
Show Author Affiliations
Tuan Guo, Jinan Univ. (China)
Yang Ran, Jinan Univ. (China)
Yannan Tan, Jinan Univ. (China)
Shuai Gao, Jinan Univ. (China)
Lipeng Sun, Jinan Univ. (China)
Bai-Ou Guan, Jinan Univ. (China)
Jacques Albert, Carleton Univ. (Canada)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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