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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 28175–28181

Long fiber Bragg grating sensor interrogation using discrete-time microwave photonic filtering techniques

Amelia Lavinia Ricchiuti, David Barrera, Salvador Sales, Luc Thevenaz, and José Capmany  »View Author Affiliations

Optics Express, Vol. 21, Issue 23, pp. 28175-28181 (2013)

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A novel technique for interrogating photonic sensors based on long fiber Bragg gratings (FBGs) is presented and experimentally demonstrated, dedicated to detect the presence and the precise location of several spot events. The principle of operation is based on a technique used to analyze microwave photonics (MWP) filters. The long FBGs are used as quasi-distributed sensors. Several hot-spots can be detected along the FBG with a spatial accuracy under 0.5 mm using a modulator and a photo-detector (PD) with a modest bandwidth of less than 1 GHz. The proposed interrogation system is intrinsically robust against environmental changes.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.1480) Optical devices : Bragg reflectors
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:

Original Manuscript: September 6, 2013
Revised Manuscript: October 18, 2013
Manuscript Accepted: November 2, 2013
Published: November 8, 2013

Amelia Lavinia Ricchiuti, David Barrera, Salvador Sales, Luc Thevenaz, and José Capmany, "Long fiber Bragg grating sensor interrogation using discrete-time microwave photonic filtering techniques," Opt. Express 21, 28175-28181 (2013)

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