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Proceedings Paper

Highly sensitive hydrostatic-pressure measurement with a fiber grating laser embedded in a composite structure
Author(s): Zhan Quan; Long Jin; Yong-Liang Chang; Bai-Ou Guan
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Paper Abstract

We present a high-sensitivity hydrostatic pressure sensor based on a dual-polarization fiber grating laser. To enhance the sensitivity, the laser is embedded in a composite structure to effectively convert the pressure into intra-cavity birefringence. The measurement is carried out by monitoring the beat frequency between the two orthogonal polarization laser modes. The pressure sensitivity reaches 0.17 GHz/MPa within the range 0 to 10 MPa, about one hundred times higher than the bare laser, and the minimal detectable pressure change is as small as 10 kPa.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212Q (17 October 2012); doi: 10.1117/12.966850
Show Author Affiliations
Zhan Quan, Jinan Univ. (China)
Long Jin, Jinan Univ. (China)
Yong-Liang Chang, Jinan Univ. (China)
Bai-Ou Guan, Jinan Univ. (China)

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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