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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 1 — Jan. 1, 2006
  • pp: 23–25

Simultaneous demodulation technique for a multiplexed fiber Fizeau interferometer and fiber Bragg grating sensor system

Allan C.L. Wong, Paul A. Childs, and Gang-Ding Peng  »View Author Affiliations


Optics Letters, Vol. 31, Issue 1, pp. 23-25 (2006)
http://dx.doi.org/10.1364/OL.31.000023


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Abstract

We propose a demodulation technique for a multiplexed fiber Fizeau interferometer (FFI) and fiber Bragg grating (FBG) sensor system using the discrete wavelet transform with signal processing enhancements. This simple and flexible demodulation technique determines the cavity length of FFI and the Bragg wavelength of FBG simultaneously and is especially suited for quasi-static measurements. We demonstrate this demodulation technique by performing some strain measurements, and a strain resolution of 1.0 μ ϵ and an accuracy of 2.6 μ ϵ are obtained. The maximum cross-talk of the sensor system is 6% of the applied strains.

© 2006 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4230) Fiber optics and optical communications : Multiplexing
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.6020) Fourier optics and signal processing : Continuous optical signal processing

ToC Category:
Fiber Optics and Optical Communications

Citation
Allan C. Wong, Paul A. Childs, and Gang-Ding Peng, "Simultaneous demodulation technique for a multiplexed fiber Fizeau interferometer and fiber Bragg grating sensor system," Opt. Lett. 31, 23-25 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-1-23

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