Photonic Sensors

, Volume 1, Issue 3, pp 260–267

Loop topology based white light interferometric fiber optic sensor network for application of perimeter security

Open Access
Regular

Abstract

A loop topology based white light interferometric sensor network for perimeter security has been designed and demonstrated. In the perimeter security sensing system, where fiber sensors are packaged in the suspended cable or buried cable, a bi-directional optical path interrogator is built by using Michelson or Mach-Zehnder interferometer. A practical implementation of this technique is presented by using an amplified spontaneous emission (ASE) light source and standard single mode fiber, which are common in communication industry. The sensor loop topology is completely passive and absolute length measurements can be obtained for each sensing fiber segment so that it can be used to measure quasi-distribution strain perturbation. For the long distance perimeter monitoring, this technique not only extends the multiplexing potential, but also provides a redundancy for the sensing system. One breakdown point is allowed in the sensor loop because the sensing system will still work even if the embedded sensor loop breaks somewhere.

Keywords

Optical fiber sensors quasi-distributed sensing system perimeter security white light interferometry 

References

  1. [1]
    J. P. Dakin, J. Pearce, and P. Strong, “A novel distributed optical fiber sensing system enabling location of disturbances in a Sagnac loop interferometer,” in Proc. SPIE, vol. 838, pp. 325, 1987.ADSCrossRefGoogle Scholar
  2. [2]
    S. J. Spammer, P. L. Swart, and A. Chtcherbakov, “Merged Sagnac-Michelson interferometer for distributed disturbance detection,” Journal of Lightwave Technology, vol. 15, no. 6, pp. 972–976, 1997.ADSCrossRefGoogle Scholar
  3. [3]
    M. Szustakowski, W. Ciurapiński, M. Życzkowski, and N. Pałka, “Recent development of fiber optic sensors for perimeter security,” in 35th Annual 2001 International Carnahan Conference on Security Technology, London, October 16–19, pp. 142–148, 2001.Google Scholar
  4. [4]
    D. Donlagić and B. Culshaw, “A forward propagation fully distributed microbend sensor system,” in International Conference on Optical Fiber Sensors, Venice, October 11–13, pp. 662–665, 2000.Google Scholar
  5. [5]
    Qizhen Sun, Deming Liu, Hairong Liu, Yi He, and Junguo Yuan, “Distributed disturbance sensor based on a novel Mach-Zehnder interferometer with a fiber-loop,” in Proc. SPIE, vol. 6344, pp. 63440k, 2006.ADSCrossRefGoogle Scholar
  6. [6]
    Tian Lan, Chunxi Zhang, Lijing Li, Guangming Luo, and Chen Li, “Perimeter security system based on fiber optic disturbance sensor,” in Proc. SPIE, vol. 6830, pp. 68300J, 2007.ADSCrossRefGoogle Scholar
  7. [7]
    A. D. Kersey and W. W. Morey, “Multiplexed Brag grating fibre-laser strain-sensor system,” Electronics Letters, vol. 29, no. 1, pp. 112–114, 1993.ADSCrossRefGoogle Scholar
  8. [8]
    G. Duck and M. M. Ohn, “Distributed Bragg grating sensing with a direct group-delay measurement technique,” Optics Letters, vol. 25, no. 2, pp. 90–92, 2000.ADSCrossRefGoogle Scholar
  9. [9]
    E. Sensfelder, J. Burck, and H. J. Ache, “Characterization of a measurement of leakages in tanks and pipelines,” Applied Spectroscopy, vol. 52, no. 10, pp. 1283–1298, 1998.ADSCrossRefGoogle Scholar
  10. [10]
    T. Horiguchi, K. Shimizu, T. Kurashima, M. Tateda, and Y. Koyamada, “Development of a distributed sensing technique using Brillouin scattering,” Journal of Lightwave Technology, vol. 13, no. 7, pp. 1296–1302, 1995.ADSCrossRefGoogle Scholar
  11. [11]
    S. A. Al-Chalabi, B. Culshaw, and D. E. N. Davies, “Partially coherent sources in interferometry,” in Proceedings of 1st International Conference on Optical Fiber Sensors, London, April 26–28, pp. 132–135, 1983.Google Scholar
  12. [12]
    J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, “Coherence multiplexing of fiber optic interferometric sensors,” Journal of Lightwave Technology, vol. LT-3, no. 5, pp. 1062–1072, 1985.ADSCrossRefGoogle Scholar
  13. [13]
    V. Gusmeroli, “High-performance serial array of coherence multiplexed interferometric fiber-optic sensors,” Journal of Lightwave Technology, vol. 11, no. 10, pp. 1681–1686, 1993.ADSCrossRefGoogle Scholar
  14. [14]
    W. V. Sorin and D. M. Baney, “Multiplexing sensing using optical low-coherence reflectometry,” IEEE Photonics Technology Letters, vol. 7, no. 8, pp. 917–919, 1995.ADSCrossRefGoogle Scholar
  15. [15]
    D. Inaudi, S. Vurpillot, and S. Lloret, “In-line coherence multiplexing of displacement sensors, a fiber optic extensometer,” in Proc. SPIE, vol. 2718, pp. 251–257, 1996.ADSCrossRefGoogle Scholar
  16. [16]
    Libo Yuan, Limin Zhou, Wei Jin, and Jun Yang, “Low-coherence fiber-optic sensor ring network based on a Mach-Zehnder interrogator,” Optics Letters, vol. 27, no. 11, pp. 894–896, 2002.ADSCrossRefGoogle Scholar
  17. [17]
    Libo Yuan, Wei Jin, Limin Zhou, Y. H. Hoo, and S. M. Demokan, “Enhanced multiplexing capacity of low-coherence reflectometric sensors with a loop topology,” IEEE Photonics Technology Letters, vol. 14, no. 8, pp. 1157–1159, 2002.ADSCrossRefGoogle Scholar
  18. [18]
    C. D. Butter and G. B. Hocker, “Fiber optic strain gauge,” Applied Optics, vol. 17, no. 18, pp. 2867–2869, 1978.ADSCrossRefGoogle Scholar
  19. [19]
    L. B. Yuan, “Optical path automatic compensation low-coherence interferometric fiber optic temperature sensor,” Optics & Laser Technology, vol. 30, no. 1, pp. 33–38, 1998.ADSCrossRefGoogle Scholar

Copyright information

© The Author(s) 2010

Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  1. 1.Key Laboratory of Optical Fiber Sensors (Heilongjiang Province), Photonics Research Center, College of ScienceHarbin Engineering UniversityHarbinChina
  2. 2.Department of Civil and Environmental EngineeringUniversity of Alaksa FairbanksFairbanksUSA

Personalised recommendations