Long-range quasi-distributed high temperature sensing based on fiber Bragg grating imbedded in high thermal conductive sheath cable

W. Ha, J. Kim, M. Park, A. Csipkes, Kyunghwan Oh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we experimentally demonstrate the potential of quasi-distributed high temperature sensor based on fiber Bragg grating (FBG) utilizing high thermal conductive sheath, which can be a cost-effective alternative for conventional distributed temperature sensors based on Raman, Brillouin, and Rayleigh scattering. A unique Fire Sensing Cable (FSC) used in this experiment is constructed from a 304 stainless steel sheath with 16 optical fibers imbedded in a conductive fluid. One of the fibers contains FBGs for temperature sensing. Total of seventy seven FBGs were serially inscribed with the spacing of six meter over the total length of 468 meter. FSC was heated by various hot zones formed by IR furnace and nitrogen heat nozzle, as the shifts of FBGs were monitored. Although FBGs were 6 meter apart each other, high thermal conductivity of the stainless steal sheath made it possible to check temperature change in the region between gratings. These preliminary results clearly show a high potential of FBGs combined with FSC in applications of quasi-distributed fire sensing cables and monitoring systems.

Original languageEnglish
Title of host publication19th International Conference on Optical Fibre Sensors
DOIs
Publication statusPublished - 2008 Jun 26
Event19th International Conference on Optical Fibre Sensors - Perth, WA, Australia
Duration: 2008 Apr 152008 Apr 18

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7004
ISSN (Print)0277-786X

Other

Other19th International Conference on Optical Fibre Sensors
CountryAustralia
CityPerth, WA
Period08/4/1508/4/18

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Ha, W., Kim, J., Park, M., Csipkes, A., & Oh, K. (2008). Long-range quasi-distributed high temperature sensing based on fiber Bragg grating imbedded in high thermal conductive sheath cable. In 19th International Conference on Optical Fibre Sensors [700465] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7004). https://doi.org/10.1117/12.787175