OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 16, Iss. 4 — Feb. 15, 1991
  • pp: 273–275

Quadrature phase-shifted, extrinsic Fabry–Perot optical fiber sensors

Kent A. Murphy, Michael F. Gunther, Ashish M. Vengsarkar, and Richard O. Claus  »View Author Affiliations

Optics Letters, Vol. 16, Issue 4, pp. 273-275 (1991)

View Full Text Article

Enhanced HTML    Acrobat PDF (378 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We demonstrate the operation of a quadrature phase-shifted extrinsic Fabry–Perot fiber-optic sensor for the detection of the amplitude and the relative polarity of dynamically varying strain. Two laterally displaced single-mode fibers inserted within a hollow silica tube form the 90° phase-shifted sensing system. A multimode fiber, placed in the tube facing the two fibers, acts as a reflector, thereby creating an air gap that acts as a Fabry–Perot cavity. A theoretical description of the sensor is given, and its operation as a dynamically varying strain sensor is described. Strain sensitivities of 5.54° phase shift/microstrain cm−1 are obtained.

© 1991 Optical Society of America

Original Manuscript: August 9, 1990
Manuscript Accepted: November 28, 1990
Published: February 15, 1991

Kent A. Murphy, Michael F. Gunther, Ashish M. Vengsarkar, and Richard O. Claus, "Quadrature phase-shifted, extrinsic Fabry–Perot optical fiber sensors," Opt. Lett. 16, 273-275 (1991)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. T. Yoshino, K. Kurosawa, K. Itoh, T. Ose, IEEE J. Quantum Electron. QE-18, 1624 (1982). [CrossRef]
  2. K. L. Belsley, J. B. Carroll, L. A. Hess, D. R. Huber, D. Schmadel, Proc. Soc. Photo-Opt. Instrum. Eng. 566, 257 (1985).
  3. A. D. Kersey, D. A. Jackson, M. Corke, Opt. Commun. 45, 71 (1983). [CrossRef]
  4. C. E. Lee, H. F. Taylor, Electron. Lett. 24, 193 (1988). [CrossRef]
  5. J. Putz, J. Putz, A. Wicks, T. Diller, “Thin-film shear stress gauge,” presented at the American Society of Mechanical Engineers Winter Annual Meeting, Dallas, Texas, November 26, 1990.
  6. K. A. Murphy, M. S. Miller, A. M. Vengsarkar, R. O. Claus, IEEE J. Lightwave Technol. 8, 1688 (1990). [CrossRef]
  7. G. Keiser, Optical Fiber Communications (McGraw-Hill, New York, 1983), p. 134.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article

OSA is a member of CrossRef.

CrossCheck Deposited