Optical in-fiber Bragg grating sensor systems for medical applications

Yun-Jiang Rao, David J. Webb, David A. Jackson, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticlepeer-review


Two in-fiber Bragg grating (FBG) temperature sensor systems for medical applications are demonstrated: (1) an FBG flow-directed thermodilution catheter based on interferometric detection of wavelength shift that is used for cardiac monitoring; and (2) an FBG sensor system with a tunable Fabry-Perot filter for in vivo temperature profiling in nuclear magnetic resonance (NMR) machines. Preliminary results show that the FBG sensor is in good agreement with electrical sensors that are widely used in practice. A field test shows that the FBG sensor system is suitable for in situ temperature profiling in NMR machines for medical applications.
Original languageEnglish
Pages (from-to)38-44
Number of pages7
JournalJournal of Biomedical Optics
Issue number1
Publication statusPublished - Jan 1998

Bibliographical note

Rao, Y.J., Webb, David J., Jackson, D.A., Zhang, Lin and Bennion, Ian, Optical in-fiber Bragg grating sensor systems for medical applications. Journal of biomedical optics, 3 (1), pp. 38-44, (1998). Copyright 1998 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.


  • fiber-optic sensors
  • interferometry
  • in-fiber Bragg gratings
  • temperature sensors
  • cardiac monitoring
  • NMR imaging
  • microwaves


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