Bend sensing by measuring the resonance splitting of long-period fiber gratings

Y. Liu*, L. Zhang, J.A.R. Williams, I. Bennion

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

An application of long-period fiber gratings (fabricated in standard fiber) as bend sensors is reported. A simple model, taking account of the strain and compression in the fiber cladding, is used to calculate the splitting of the cladding modes and is found to be in excellent agreement with the experimental results. Over 80 nm resonance splitting was observed under a 5.6 m-1 bend curvature giving a bend sensitivity of 14.5 nm/(m-1), the best obtained data so far. © 2001 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)69-72
Number of pages4
JournalOptics Communications
Volume193
Issue number1-6
DOIs
Publication statusPublished - 15 Jun 2001

Keywords

  • long-period fiber grating
  • fiber-optic sensing
  • mode splitting

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