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

R. R J Maier, James S. Barton, J. D C Jones

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3310-3314
Number of pages5
JournalApplied Optics
Volume43
Issue number16
DOIs
Publication statusPublished - 1 Jun 2004

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