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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 27 — Dec. 17, 2012
  • pp: 28319–28329

Long-range vibration sensor based on correlation analysis of optical frequency-domain reflectometry signals

Zhenyang Ding, X. Steve Yao, Tiegen Liu, Yang Du, Kun Liu, Qun Han, Zhuo Meng, and Hongxin Chen  »View Author Affiliations


Optics Express, Vol. 20, Issue 27, pp. 28319-28329 (2012)
http://dx.doi.org/10.1364/OE.20.028319


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Abstract

We present a novel method to achieve a space-resolved long- range vibration detection system based on the correlation analysis of the optical frequency-domain reflectometry (OFDR) signals. By performing two separate measurements of the vibrated and non-vibrated states on a test fiber, the vibration frequency and position of a vibration event can be obtained by analyzing the cross-correlation between beat signals of the vibrated and non-vibrated states in a spatial domain, where the beat signals are generated from interferences between local Rayleigh backscattering signals of the test fiber and local light oscillator. Using the proposed technique, we constructed a standard single-mode fiber based vibration sensor that can have a dynamic range of 12 km and a measurable vibration frequency up to 2 kHz with a spatial resolution of 5 m. Moreover, preliminarily investigation results of two vibration events located at different positions along the test fiber are also reported.

© 2012 OSA

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Sensors

History
Original Manuscript: September 19, 2012
Revised Manuscript: November 14, 2012
Manuscript Accepted: November 14, 2012
Published: December 6, 2012

Citation
Zhenyang Ding, X. Steve Yao, Tiegen Liu, Yang Du, Kun Liu, Qun Han, Zhuo Meng, and Hongxin Chen, "Long-range vibration sensor based on correlation analysis of optical frequency-domain reflectometry signals," Opt. Express 20, 28319-28329 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-27-28319


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