OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 40, Iss. 19 — Jul. 1, 2001
  • pp: 3176–3181

Quasi-distributed fiber-optic strain sensor: principle and experiment

Yang Zhao and Farhad Ansari  »View Author Affiliations

Applied Optics, Vol. 40, Issue 19, pp. 3176-3181 (2001)

View Full Text Article

Enhanced HTML    Acrobat PDF (372 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Sensors capable of making distributed measurements allow for monitoring of the entire structure. Optical fiber sensors are especially attractive for this purpose, since they are geometrically versatile and can be readily integrated within various types of structure and material. Development and characteristics of a quasi-distributed intrinsic fiber-optic strain sensor based on white-light interferometry are described. The research presented here describes the development of a new optical fiber sensor system for measurement of structural strains based on double white-light interferometry. Individual segments of single-mode optical fibers forming a common-path interferometer are linked in series, and a scanning white-light interferometer provides for distributed sensing of strain signals from various locations in the structure. The system is configured for automatic compensation of drift due to environmental effects, i.e., temperature and vibration. Strain gauges were employed for comparison and verification of strain signals as measured by the new system. The experimental results demonstrate the linearity of the system and the capability for distributed sensing of strains.

© 2001 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry

Original Manuscript: November 17, 2000
Revised Manuscript: March 23, 2001
Published: July 1, 2001

Yang Zhao and Farhad Ansari, "Quasi-distributed fiber-optic strain sensor: principle and experiment," Appl. Opt. 40, 3176-3181 (2001)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. F. Ansari, “Theory and applications of integrated fiber optic sensors in structures,” in Intelligent Civil Engineering Materials and Structures, F. Ansari, ed. (ASCE Press, Reston, Va., 1997), pp. 2–28.
  2. X. Gu, Z. Chen, F. Ansari, “Method and theory for multi-gauge distributed fiber optic crack sensor,” J. Intell. Mater. Syst. Struct. 10, 266–273 (1999).
  3. W. C. Michie, B. Culshaw, “Detection of moisture in concrete by optical fibers,” Cement Concrete Composites 19, 35–44 (1997). [CrossRef]
  4. V. Lecoeuche, D. J. Webb, C. N. Pannel, D. A. Jackson, “Distributed sensor for detection of impending structural failure along a 25-km optical fiber with 2 meter spatial resolution,” J. Struct. Control 7, 23–34 (2000). [CrossRef]
  5. A. D. Kersey, W. W. Morey, “Multiplexed Bragg grating fiber-laser strain sensor system with mode-locked interrogation,” Electron. Lett. 29, 112–118 (1993).
  6. Z. Chen, Q. Li, F. Ansari, “Serial multiplexing of optical fibers for sensing of structural strains,” J. Struct. Control 7, 103–117 (2000). [CrossRef]
  7. T. Y. Liu, J. Cory, D. A. Jackson, “Partially multiplexing sensor network exploiting low coherence interferometry,” Appl. Opt. 32, 1100–1103 (1993). [CrossRef] [PubMed]
  8. Y. J. Rao, D. A. Jackson, “A prototype multiplexing system for use with a large number of fiber-optic based extrinsic Fabry–Perot sensor exploiting low coherence interrogation,” in Distributed and Multiplexed Fiber Optic Sensors V, J. P. Dakin, A. D. Kersey, eds., Proc. SPIE2507, 90–98 (1995). [CrossRef]
  9. J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, H. L. Shaw, “Coherence multiplexing of fiber-optic interferometric sensors,” J. Lightwave Technol. LT-3, 1062–1072 (1985).
  10. J. L. Santos, D. A. Jackson, “Coherence sensing of time-addressed optical-fiber sensors illuminated by a multimode laser diode,” Appl. Opt. 30, 5068–5076 (1991). [CrossRef] [PubMed]
  11. D. Inaudi, “Coherence multiplexing of in-line displacement and temperature sensors,” Opt. Eng. 34, 1912–1915 (1995). [CrossRef]
  12. M. Born, E. Wolf, Principle of Optics, 7th ed. (Cambridge University, Cambridge, UK, 1999), pp. 352–359.
  13. J. S. Sirkis, H. W. Haslach, “Interferometric strain measurement by arbitrarily configured, surface-mounted, optical fibers,” IEEE J. Lightwave Technol. LT-8, 1497–1503 (1990). [CrossRef]

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  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited