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

Authors
Liu, Y Zhang, L Williams, JAR Bennion, I
Citation
Y. Liu et al., Bend sensing by measuring the resonance splitting of long-period fiber gratings, OPT COMMUN, 193(1-6), 2001, pp. 69-72
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
193
Issue
1-6
Year of publication
2001
Pages
69 - 72
Database
ISI
SICI code
0030-4018(20010615)193:1-6<69:BSBMTR>2.0.ZU;2-G
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 o f the cladding modes and is found to be in excellent agreement with the exp erimental results. Over 80 nm resonance splitting was observed under a 5.6 mt bend curvature giving a bend sensitivity of 14.5 nm/(m(-1)), the best ob tained data so far. (C) 2001 Elsevier Science B.V. All rights reserved.