OSA's Digital Library

Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 7587–7597

Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system

He Wang, Qizhen Sun, Xiaolei Li, Jianghai Wo, Perry Ping Shum, and Deming Liu  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 7587-7597 (2014)

View Full Text Article

Enhanced HTML    Acrobat PDF (4107 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



An improved algorithm named “twice-FFT” for multi-point intrusion location in distributed Sagnac sensing system is proposed and demonstrated. To find the null-frequencies more accurately and efficiently, a second FFT is applied to the frequency spectrum of the phase signal caused by intrusion. After Gaussian fitting and searching the peak response frequency in the twice-FFT curve, the intrusion position could be calculated out stably. Meanwhile, the twice-FFT algorithm could solve the problem of multi-point intrusion location. Based on the experiment with twice-FFT algorithm, the location error less than 100m for single intrusion is achieved at any position along the total length of 41km, and the locating ability for two or three intrusions occurring simultaneously is also demonstrated.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:

Original Manuscript: January 20, 2014
Revised Manuscript: March 13, 2014
Manuscript Accepted: March 16, 2014
Published: March 25, 2014

He Wang, Qizhen Sun, Xiaolei Li, Jianghai Wo, Perry Ping Shum, and Deming Liu, "Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system," Opt. Express 22, 7587-7597 (2014)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. J. C. Juarez, E. W. Maier, K. N. Choi, H. F. Taylor, “Distributed fiber-optic intrusion sensor system,” J. Lightwave Technol. 23(6), 2081–2087 (2005). [CrossRef]
  2. P. Chelliah, K. Murgesan, S. Samvel, B. R. Chelamchala, J. Tammana, M. Nagarajan, B. Raj, “Looped back fiber mode for reduction of false alarm in leak detection using distributed optical fiber sensor,” Appl. Opt. 49(20), 3869–3874 (2010). [CrossRef] [PubMed]
  3. H. Murayama, K. Kageyama, H. Naruse, A. Shimada, K. Uzawa, “Application of fiber-optic distributed sensors to health monitoring for full-scale composite structures,” J. Intell. Mater. Syst. Struct. 14(1), 3–13 (2003). [CrossRef]
  4. H. Ghafoori-Shiraz, T. Okoshi, “Fault location in optical fibers using optical frequency domain reflectometry,” J. Lightwave Technol. 4(3), 316–322 (1986). [CrossRef]
  5. X. Li, Q. Sun, J. Wo, M. Zhang, D. Liu, “Hybrid TDM/WDM-based fiber-optic sensor network for perimeter intrusion detection,” J. Lightwave Technol. 30(8), 1113–1120 (2012). [CrossRef]
  6. Q. Sun, D. Liu, J. Wang, H. Liu, “Distributed fiber-optic vibration sensor using a ring Mach-Zehnder interferometer,” Opt. Commun. 281(6), 1538–1544 (2008). [CrossRef]
  7. X. Hong, J. Wu, C. Zuo, F. Liu, H. Guo, K. Xu, “Dual Michelson interferometers for distributed vibration detection,” Appl. Opt. 50(22), 4333–4338 (2011). [CrossRef] [PubMed]
  8. H. Ohno, H. Naruse, M. Kihara, A. Shimada, “Industrial applications of the BOTDR optical fiber strain sensor,” Opt. Fiber Technol. 7(1), 45–64 (2001). [CrossRef]
  9. N. Linze, P. Mégret, M. Wuilpart, “Development of an intrusion sensor based on a polarization-OTDR system,” IEEE Sens. J. 12(10), 3005–3009 (2012). [CrossRef]
  10. Y. Peled, A. Motil, M. Tur, “Fast Brillouin optical time domain analysis for dynamic sensing,” Opt. Express 20(8), 8584–8591 (2012). [CrossRef] [PubMed]
  11. K. Wada, H. Narui, D. Yamamoto, T. Matsuyama, H. Horinaka, “Balanced polarization maintaining fiber Sagnac interferometer vibration sensor,” Opt. Express 19(22), 21467–21474 (2011). [CrossRef] [PubMed]
  12. S.-C. Huang, W.-W. Lin, M.-T. Tsai, M.-H. Chen, “Fiber optic in-line distributed sensor for detection and localization of the pipeline leaks,” Sens. Actuators A Phys. 135(2), 570–579 (2007). [CrossRef]
  13. Z. Guang, X. Chao, L. Yijun, and Z. Huigang, “Dual-Sagnac optical fiber sensor used in acoustic emission source location,” in Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC),2011(IEEE, 2011), pp. 1598–1602.
  14. W. Qiang and W. Xiaowei, “Interferometeric fibre optic signal processing based on wavelet transform for subsea gas pipeline leakage inspection,” in Measuring Technology and Mechatronics Automation (ICMTMA),2010International Conference on(IEEE, 2010), pp. 501–504.
  15. G. Hong, B. Jia, H. Tang, “Location of a wideband perturbation using a fiber Fox–Smith interferometer,” J. Lightwave Technol. 25(10), 3057–3061 (2007). [CrossRef]
  16. H. Wu, H. Xu, C. Wang, and D. Zhao, “Position determination and monitoring of disturbance along distributed fiber optic sensors,” in SPIE Defense, Security, and Sensing(International Society for Optics and Photonics, 2011), pp. 80280L–80280L–80286.
  17. P. R. Hoffman, M. G. Kuzyk, “Position determination of an acoustic burst along a Sagnac interferometer,” J. Lightwave Technol. 22(2), 494–498 (2004). [CrossRef]
  18. H. Xu, H. Wu, Z. Qiao, and Q. Xiao, “A research on polarization effects in a distributed optical fiber sensor disturbance location system,” in SPIE Defense, Security, and Sensing(International Society for Optics and Photonics, 2011), pp. 80280R–80280R–80210.
  19. D. B. Mortimore, “Fiber loop reflectors,” J. Lightwave Technol. 6(7), 1217–1224 (1988). [CrossRef]
  20. A. Dandridge, A. B. Tveten, T. G. Giallorenzi, “Homodyne demodulation scheme for fiber optic sensors using phase generated carrier,” IEEE T. Microw. Theory 30(10), 1635–1641 (1982). [CrossRef]
  21. M. J. Connelly, “Digital synthetic-heterodyne interferometric demodulation,” J. Opt. A, Pure Appl. Opt. 4(6), S400–S405 (2002). [CrossRef]
  22. C. He, L. Hang, and B. Wu, “Application of homodyne demodulation system in fiber optic sensors using phase generated carrier based on LabVIEW in pipeline leakage detection,” in 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies(International Society for Optics and Photonics, 2006), 61502–61506. [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