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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 17882–17890

Quasi-distributed refractometer using tilted Bragg gratings and time domain reflectometry

Christophe Caucheteur, Marc Wuilpart, Chengkun Chen, Patrice Mégret, and Jacques Albert  »View Author Affiliations

Optics Express, Vol. 16, Issue 22, pp. 17882-17890 (2008)

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Tilted fiber Bragg gratings (TFBGs) have been demonstrated to be accurate refractometers as they couple light from the fiber core to the cladding. Because they require spectral measurements on several tens of nanometers, demodulation techniques reported so far are not suited for quasi-distributed refractive index sensing using TFBGs cascaded along a single optical fiber. We demonstrate here that a commercial Optical Time Domain Reflectometer (OTDR) can be used to multiplex identical TFBGs refractometers written in the same optical fiber. Our solution is simple, relatively fast, cost-effective and is particularly interesting for the monitoring of long structures.

© 2008 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

Original Manuscript: September 8, 2008
Revised Manuscript: October 14, 2008
Manuscript Accepted: October 14, 2008
Published: October 20, 2008

Christophe Caucheteur, Marc Wuilpart, Chengkun Chen, Patrice Mégret, and Jacques Albert, "Quasi-distributed refractometer using tilted Bragg gratings and time domain reflectometry," Opt. Express 16, 17882-17890 (2008)

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