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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 23 — Aug. 10, 2006
  • pp: 5815–5818

Fiber-optic Fabry–Perot sensors based on a combination of spatial-frequency division multiplexing and wavelength division multiplexing formed by chirped fiber Bragg grating pairs

Y. J. Rao, Z. L. Ran, and C. X. Zhou  »View Author Affiliations


Applied Optics, Vol. 45, Issue 23, pp. 5815-5818 (2006)
http://dx.doi.org/10.1364/AO.45.005815


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Abstract

Effective multiplexing for a very large number of fiber-optic fiber-Bragg-grating-based Fabry–Perot (FBGFP) sensors is proposed that is based on wavelength division multiplexing (WDM) and spatial-frequency division multiplexing (SFDM). For WDM, FBGFP sensors are arranged in different wavelength domains formed by a series of chirped fiber Bragg gratings with different central wavelengths while the sensors with different cavity lengths within the same wavelength domain are multiplexed by use of SFDM because they have different spatial frequencies as a result of their different cavity lengths. In principle, a thousand FBGFP sensors could be multiplexed with such an approach. The experimental results show that a strain accuracy of better than ± 10 με has been achieved with little cross talk.

© 2006 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4230) Fiber optics and optical communications : Multiplexing

History
Original Manuscript: January 3, 2006
Manuscript Accepted: April 27, 2006

Citation
Y. J. Rao, Z. L. Ran, and C. X. Zhou, "Fiber-optic Fabry-Perot sensors based on a combination of spatial-frequency division multiplexing and wavelength division multiplexing formed by chirped fiber Bragg grating pairs," Appl. Opt. 45, 5815-5818 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-23-5815

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