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Proceedings Paper

Ultrasonic frequency response of surface attached fiber Bragg grating
Author(s): Zhuoxuan Li; Li Pei; Bo Dong; Cheng Ma; Anbo Wang
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Paper Abstract

The spectrum shift of FBG to ultrasonic wave is caused by the refractive index profile changing along the FBG, which can be attributed to nonuniform perturbation caused by strain-optic and geometric effects of ultrasonic wave. Response of FBG to the above two effects was analyzed by V-I transmission matrix model, showing high computing efficiency. Spectra response of FBG under changing ultrasonic frequencies was simulated and discussed. In experiment, the system was sensitive enough to detect ultrasonic wave from 15 kHz to 1380 kHz. These results would provide a guideline for FBG-based acoustic detection system design in a specific ultrasonic frequency.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84213Q (17 October 2012); doi: 10.1117/12.966348
Show Author Affiliations
Zhuoxuan Li, Virginia Tech (United States)
Beijing Jiaotong Univ. (China)
Li Pei, Beijing Jiaotong Univ. (China)
Bo Dong, Virginia Tech (United States)
Cheng Ma, Virginia Tech (United States)
Anbo Wang, Virginia Tech (United States)

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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