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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 15 — Aug. 1, 2014
  • pp: 4462–4465

Adaptive ultrasonic sensor using a fiber ring laser with tandem fiber Bragg gratings

Tongqing Liu, Lingling Hu, and Ming Han  »View Author Affiliations

Optics Letters, Vol. 39, Issue 15, pp. 4462-4465 (2014)

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We propose and demonstrate an intensity-demodulated fiber-optic ultrasonic sensor system that can be self-adaptive to large quasi-static background strain perturbations. The sensor system is based on a fiber ring laser (FRL) whose laser cavity includes a pair of fiber Bragg gratings (FBGs). Self-adaptive ultrasonic detection is achieved by a tandem design where the two FBGs are engineered to have differential spectral responses to ultrasonic waves and are installed side-by-side at the same location on a structure. As a result, ultrasonic waves lead to relative spectral shifts of the FBGs and modulations to the cold-cavity loss of the FRL. Ultrasonic waves can then be detected directly from the laser intensity variations in response to the cold-cavity loss modulation. The sensor system is insensitive to quasi-static background strains because they lead to identical responses of the tandem FBGs. Based on the principle, a FRL sensor system was demonstrated and tested for adaptive ultrasonic detection when large static strains as well as dynamic sinusoidal vibrations were applied to the sensor.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(140.3510) Lasers and laser optics : Lasers, fiber
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 6, 2014
Manuscript Accepted: June 23, 2014
Published: July 24, 2014

Tongqing Liu, Lingling Hu, and Ming Han, "Adaptive ultrasonic sensor using a fiber ring laser with tandem fiber Bragg gratings," Opt. Lett. 39, 4462-4465 (2014)

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  1. P. E. Mix, Introduction to Nondestructive Testing: A Training Guide (Wiley, 2005).
  2. D. C. Betz, G. Thursby, B. Culshaw, and W. J. Staszewski, Smart Mater. Struct. 12, 122 (2003).
  3. I. M. Perez, H. L. Cui, and E. Udd, Proc. SPIE 4328, 209 (2001). [CrossRef]
  4. Q. Wu and Y. Okabe, Opt. Express 20, 28353 (2012). [CrossRef]
  5. P. Fomitchov and S. Krishnaswamy, Opt. Eng. 42, 956 (2003). [CrossRef]
  6. H. Tsuda, Compos. Sci. Technol. 66, 676 (2006). [CrossRef]
  7. D. Gatti, G. Galzerano, D. Janner, S. Longhi, and P. Laporta, Opt. Express 16, 1945 (2008). [CrossRef]
  8. H. Tsuda, E. Sato, T. Nakajima, H. Nakamura, T. Arakawa, H. Shiono, M. Minato, H. Kurabayashi, and A. Sato, Opt. Lett. 34, 2942 (2009). [CrossRef]
  9. Y. Qiao, Y. Zhou, and S. Krishnaswamy, Appl. Opt. 45, 5132 (2006). [CrossRef]
  10. M. Han, T. Q. Liu, L. L. Hu, and Q. Zhang, Opt. Express 21, 30473 (2013).
  11. T. Q. Liu and M. Han, IEEE Sens. J. 12, 2368 (2012). [CrossRef]
  12. W. W. Morey, J. R. Dunphy, and G. Meltz, Proc. SPIE 1586, 216 (1992). [CrossRef]

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