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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 20 — Jul. 10, 2012
  • pp: 4709–4714

Analysis of ultrasonic frequency response of surface attached fiber Bragg grating

Zhuoxuan Li, Li Pei, Bo Dong, Cheng Ma, and Anbo Wang  »View Author Affiliations


Applied Optics, Vol. 51, Issue 20, pp. 4709-4714 (2012)
http://dx.doi.org/10.1364/AO.51.004709


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Abstract

In recent years, fiber Bragg grating (FBG), for the well-known advantages over other fiber optic sensors, has attracted more attention in ultrasonic inspection for structure health monitoring (SHM). 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 firstly by the V-I transmission matrix model, showing high computing efficiency. Based on this model, spectra response of FBG under changing ultrasonic frequencies was simulated and discussed. In experiment, the system was able to detect a wideband ultrasonic wave ranging from 15 to 1380 kHz. These results would provide a guideline for an FBG-based acoustic detection system design in a specific ultrasonic frequency.

© 2012 Optical Society of America

OCIS Codes
(230.1040) Optical devices : Acousto-optical devices
(230.1480) Optical devices : Bragg reflectors
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 14, 2012
Revised Manuscript: May 25, 2012
Manuscript Accepted: June 6, 2012
Published: July 9, 2012

Citation
Zhuoxuan Li, Li Pei, Bo Dong, Cheng Ma, and Anbo Wang, "Analysis of ultrasonic frequency response of surface attached fiber Bragg grating," Appl. Opt. 51, 4709-4714 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-20-4709

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