Gratings in novel fibre geometry for applications in shape sensing

Helen L. Dobb, Thomas D.P. Allsop, David J. Webb, Kyriacos Kalli

Research output: Chapter in Book/Published conference outputConference publication


A long period grating (LPG) fabricated in progressive three-layered (PTL) fibre is described. The grating with a period of 391µm, had dual attenuation bands associated with a particular cladding mode. The dual attenuation bands have been experimentally characterised for their spectral sensitivity to bending, which resulted in the highest sensitivity to bending seen for this particular fibre and temperature. The spectral characteristics of the fibre have been modelled giving good agreement to the experimental data as well as showing that the attenuation bands are both associated with the second order HE/EH2,n cladding mode.

Original languageEnglish
Title of host publicationOptical sensing
EditorsBrian Culshaw, Anna G. Mignani, Rainer Riesenberg
Number of pages9
ISBN (Print)978-0-8194-5381-5
Publication statusPublished - 2004
EventOptical Sensing - Strasbourg, France
Duration: 26 Apr 200427 Apr 2004

Publication series

NameSPIE proceedings
ISSN (Print)0277-786X


ConferenceOptical Sensing

Bibliographical note

Helen Dobb ; Thomas Allsop ; David J. Webb and Kyriacos Kalli "Gratings in novel fibre geometry for applications in shape sensing", Proc. SPIE 5459, Optical Sensing, 109 (September 1, 2004);

Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


Dive into the research topics of 'Gratings in novel fibre geometry for applications in shape sensing'. Together they form a unique fingerprint.

Cite this