OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21616–21625

Differential pulse-width pair BOTDA for high spatial resolution sensing

Wenhai Li, Xiaoyi Bao, Yun Li, and Liang Chen  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21616-21625 (2008)

View Full Text Article

Enhanced HTML    Acrobat PDF (479 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A differential pulse-width pair Brillouin optical time domain analysis (DPP-BOTDA) for centimeter spatial resolution sensing using meter equivalent pulses is proposed. This scheme uses the time domain waveform subtraction at the same scanned Brillouin frequency obtained from pulse lights with different pulse-widths (e.g. 50ns and 49ns) to form the differential Brillouin gain spectrum (BGS) at each fiber location. The spatial resolution is defined by the average of the rise and fall time equivalent fiber length for a small stress section rather than the pulse-width difference equivalent length. The spatial resolution of 0.18m for the 50/49ns pulse pair and 0.15m for 20/19ns pulse pair over 1km sensing length with Brillouin frequency shift accuracy of 2.6MHz are demonstrated.

© 2008 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(290.5900) Scattering : Scattering, stimulated Brillouin
(350.5730) Other areas of optics : Resolution

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 5, 2008
Revised Manuscript: December 10, 2008
Manuscript Accepted: December 10, 2008
Published: December 15, 2008

Wenhai Li, Xiaoyi Bao, Yun Li, and Liang Chen, "Differential pulse-width pair BOTDA for high spatial resolution sensing," Opt. Express 16, 21616-21625 (2008)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. H. Ohno, H. Naruse, T. Kurashima, A. Nobiki, Y. Uchiyama, and Y. Kusakabe, "Application of Brillouin scattering-based distributed optical fiber strain sensor to actual concrete piles," IEICE Trans. Electron. E 85-C, 945-951 (2002).
  2. X. Zeng, X. Bao, C. Chhoa, T. Bremner, A. Brown, M. DeMerchant, G. Ferrier, A. L. Kalamkarov, and A. V. Georgiades, "Strain measurement in a concrete beam by use of the Brillouin-scattering-based distributed fiber sensor with single-mode fibers imbedded in glass fiber reinforced polymer rods and bonded to steel reinforcing bars," Appl. Opt. 41, 5105-5114 (2002). [CrossRef] [PubMed]
  3. L. Zou, X. Bao, Y. Wan, and L. Chen, "Coherent pump-probe-based Brillouin sensor for centimetre-crack detection," Opt. Lett. 30, 370-372 (2005). [CrossRef] [PubMed]
  4. L. Zou, X. Bao, S. V. Afshar, and L. Chen, "Dependence of the Brillouin frequency shift on strain and temperature in a photonic crystal fiber," Simple method to identify the spatial location better than pulse length with high strain accuracy," Opt. Lett. 29, 1485-1487 (2004). [CrossRef] [PubMed]
  5. V. Lecoueche, D. J. Web, C. N. Pannell, and D. A. Jackson, "Transient response in high-resolution Brillouin-based distributed sensing using probe pulses shorter than the acoustic relaxation time," Opt. Lett. 25, 156-158 (2000). [CrossRef]
  6. X. Bao, Y. Wan, L. Zou, and L. Chen, "Effect of optical phase on a distributed Brillouin sensor at centimeter spatial resolution," Opt. Lett. 30, 827-829 (2005). [CrossRef] [PubMed]
  7. Y. Li, X. Bao, F. Ravet, and E. Ponomarev, "Distributed Brillouin sensor system based on offset locking of two distributed feedback lasers," Appl. Opt. 47, 99-102 (2008). [CrossRef] [PubMed]
  8. T. Horiguchi, K. Shimizu, T. Kurashima, M. Tateda, and Y. Koyamada, "Development of a distributed sensing technique using Brillouin scattering," J. Lightwave Technol. 13, 1296-1302 (1995). [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