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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 35 — Dec. 10, 2013
  • pp: 8581–8585

Electro-optic modulator feedback control in phase-sensitive optical time-domain reflectometer distributed sensor

Xiaonan Hui, Shilie Zheng, Jinhai Zhou, Chen Xu, Hao Chi, Xiaofeng Jin, and Xianmin Zhang  »View Author Affiliations


Applied Optics, Vol. 52, Issue 35, pp. 8581-8585 (2013)
http://dx.doi.org/10.1364/AO.52.008581


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Abstract

We propose a novel method to control the electro-optic modulator (EOM) applied in the phase-sensitive optical time-domain reflectometer (ϕ-OTDR) distributed sensor system, which uses the data of the OTDR curves rather than applying an independent control module. We explain the relationship between the accumulation value of the OTDR curve and the EOM’s extinction ratio, and utilize this relationship to feedback control the EOM. The experimental results show that it can compensate the drift of the EOM, and make the modulator run with a high extinction ratio for a long time. And this method can also ratify a small jump of the EOM’s bias point.

© 2013 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

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: August 2, 2013
Revised Manuscript: October 29, 2013
Manuscript Accepted: November 14, 2013
Published: December 9, 2013

Citation
Xiaonan Hui, Shilie Zheng, Jinhai Zhou, Chen Xu, Hao Chi, Xiaofeng Jin, and Xianmin Zhang, "Electro-optic modulator feedback control in phase-sensitive optical time-domain reflectometer distributed sensor," Appl. Opt. 52, 8581-8585 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-35-8581

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