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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1083–1085

Reflectometry based on a frequency-shifted interferometer using sideband interference

Bing Qi, Fei Ye, Li Qian, and Hoi-Kwong Lo  »View Author Affiliations


Optics Letters, Vol. 38, Issue 7, pp. 1083-1085 (2013)
http://dx.doi.org/10.1364/OL.38.001083


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Abstract

Frequency-shifted interferometry has shown great potential in optical fiber sensor multiplexing. In this letter, we propose and demonstrate a frequency-shifted interferometer (FSI) based on sideband interference. Comparing with previous implementation of FSI based on a Sagnac interferometer, this scheme is much simpler and compact. By scanning the driving frequency of a LiNbO3 phase modulator in the range of 4.5–5.5 GHz, we demonstrate a spatial resolution of 0.1 m, which is 50 times better than the previously reported results.

© 2013 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 16, 2013
Revised Manuscript: February 27, 2013
Manuscript Accepted: March 3, 2013
Published: March 21, 2013

Citation
Bing Qi, Fei Ye, Li Qian, and Hoi-Kwong Lo, "Reflectometry based on a frequency-shifted interferometer using sideband interference," Opt. Lett. 38, 1083-1085 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-7-1083


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