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Applied Optics

Applied Optics


  • Vol. 43, Iss. 16 — Jun. 1, 2004
  • pp: 3310–3314

Fiber Bragg grating location by a side-scatter technique based on cladding-mode coupling

Robert R. J. Maier, James S. Barton, and Julian D. C. Jones  »View Author Affiliations

Applied Optics, Vol. 43, Issue 16, pp. 3310-3314 (2004)

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At wavelengths slightly shorter than the normal resonance for a fiber Bragg grating, radiation can be coupled into cladding and radiation modes that become visible external to the fiber. We describe experimental measurements on a fiber Bragg grating under broadband illumination, showing the axial variation and angular distribution of side-scattered radiation. The scattering signal can locate the grating position subject to an offset in the backscatter direction. The spectrum of scattered radiation is consistent with a published theoretical model of mode coupling by a grating in a finite cladding fiber.

© 2004 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(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
(290.5820) Scattering : Scattering measurements

Original Manuscript: May 17, 2003
Revised Manuscript: February 18, 2004
Published: June 1, 2004

Robert R. J. Maier, James S. Barton, and Julian D. C. Jones, "Fiber Bragg grating location by a side-scatter technique based on cladding-mode coupling," Appl. Opt. 43, 3310-3314 (2004)

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