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Optics Letters

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  • Vol. 26, Iss. 6 — Mar. 15, 2001
  • pp: 328–330

Interrogation of fiber gratings by use of low-coherence spectral interferometry of noiselike pulses

Shay Keren and Moshe Horowitz  »View Author Affiliations


Optics Letters, Vol. 26, Issue 6, pp. 328-330 (2001)
http://dx.doi.org/10.1364/OL.26.000328


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Abstract

We demonstrate an innovative method for a real-time interrogation of fiber Bragg gratings based on low-coherence spectral interferometry of noiselike pulses. By analyzing the spectral interference at the output of a Michelson interferometer we obtained the impulse response of the grating with a time resolution of ~350 fs . Using the Gabor transformation, we could directly detect nonuniform regions inside the grating and could measure the spatial dependence of the resonance wavelength along the grating.

© 2001 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components

Citation
Shay Keren and Moshe Horowitz, "Interrogation of fiber gratings by use of low-coherence spectral interferometry of noiselike pulses," Opt. Lett. 26, 328-330 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-6-328


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