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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 20 — Jul. 10, 2009
  • pp: 3915–3920

Tilted Bragg grating multipoint sensor based on wavelength-gated cladding-modes coupling

Christophe Caucheteur, Patrice Mégret, and Andrea Cusano  »View Author Affiliations


Applied Optics, Vol. 48, Issue 20, pp. 3915-3920 (2009)
http://dx.doi.org/10.1364/AO.48.003915


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Abstract

In recent years, tilted fiber Bragg gratings (TFBGs) have been demonstrated to be a promising technological platform for sensing applications such as the measurement of axial strain, bending, vibration, and refractive index. However, complex spectral measurements combined with the difficulty of using TFBGs in a quasi-distributed sensors network limit the practical exploitation of this assessed technology. To address this issue, we propose a hybrid configuration involving uniform and TFBGs working in reflection, which makes the demodulation technique easier and allows multipoint sensing. This configuration provides a narrowband reflection signal that is modulated by the wavelength selective losses associated with some TFBG’s cladding-modes resonances. We report here the operating principle of the proposed device. An experimental validation is presented for refractive-index sensing purposes.

© 2009 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
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 12, 2009
Revised Manuscript: March 24, 2009
Manuscript Accepted: May 8, 2009
Published: July 2, 2009

Citation
Christophe Caucheteur, Patrice Mégret, and Andrea Cusano, "Tilted Bragg grating multipoint sensor based on wavelength-gated cladding-modes coupling," Appl. Opt. 48, 3915-3920 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-20-3915

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