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Tilted fibre Bragg grating based 800nm WDM interrogation system for strain, temperature and refractive index sensing

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Abstract

We report the implementation of a low-cost high-resolution WDM interrogation system operating around 800nm region with bandwidth up to 60 nm and resolution of 13 pm by utilising a tilted fibre Bragg grating as an out-coupling device and a CCD-array detector. The system has been evaluated for interrogating fibre Bragg grating based strain, temperature sensors, giving sensitivities of 0.6 pm/µe and 5.6 pm/°C which are in good agreement with previously reported values. Furthermore, the system has been utilised to detect refractive index change of sample liquids, demonstrating a capability of measuring index change as small as 10-5.
Original languageEnglish
Title of host publicationThird European Workshop on Optical Fibre Sensors
EditorsAntonello Cutolo, Brian Culshaw, José Miguel López-Higuera
PublisherSociety of Photo-Optical Instrumentation Engineers (SPIE)
Number of pages4
Volume6619
ISBN (Print)978-0-8194-6761-4
DOIs
Publication statusPublished - Apr 2008
Event3rd European Workshop on Optical Fibre Sensors - Napoli, Italy
Duration: 4 Jul 20076 Jul 2007

Publication series

NameSPIE proceedings
PublisherSPIE
Volume6619
ISSN (Print)0277-786X

Workshop

Workshop3rd European Workshop on Optical Fibre Sensors
Country/TerritoryItaly
CityNapoli
Period4/07/076/07/07

Bibliographical note

Rui Suo ; Xianfeng Chen ; Kaiming Zhou ; Lin Zhang ; Ian Bennion and Bo Liu
"Tilted-fibre-Bragg-grating-based 800nm WDM interrogation system for strain, temperature, and refractive index sensing", Cutolo, A., Culshaw, B., López-Higuera, J.M. (eds) , Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192N (July 02, 2007).
Copyright 2007 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic 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.
http://dx.doi.org/10.1117/12.738679

Keywords

  • high-resolution WDM interrogation system
  • tilted fibre Bragg grating
  • out-coupling deviceand
  • CCD-array detector
  • fibre Bragg grating
  • strain
  • temperature sensors

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