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Applied Optics

Applied Optics


  • Vol. 33, Iss. 10 — Apr. 1, 1994
  • pp: 2095–2098

Multimode fiber sensing by using mean-absolute speckle-intensity variation

Kun Pan, Chii-Maw Uang, Feng Cheng, and Francis T. S. Yu  »View Author Affiliations

Applied Optics, Vol. 33, Issue 10, pp. 2095-2098 (1994)

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We present a fiber-sensing technique that detects the mean-absolute speckle-intensity variation between the updated and the reference speckle pattern for determining the environmental perturbation factor (e.g., displacement, temperature, pressure, acoustic wave). We show that the proposed technique is highly sensitive and simple. One of the major advantages of the proposed technique is that it can perform a fast-response measurement with off-the-shelf electronic hardware. Experimental data for submicrometer displacement as well as temperature measurement are provided. To extend the dynamic range of the proposed technique, one can use an updated reference speckle pattern.

© 1994 Optical Society of America

Original Manuscript: April 14, 1993
Published: April 1, 1994

Kun Pan, Chii-Maw Uang, Feng Cheng, and Francis T. S. Yu, "Multimode fiber sensing by using mean-absolute speckle-intensity variation," Appl. Opt. 33, 2095-2098 (1994)

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