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Applied Optics

Applied Optics


  • Vol. 24, Iss. 15 — Aug. 1, 1985
  • pp: 2341–2345

Optical fiber sensor based on differential spectroscopic absorption

A. Safaai-Jazi, C. K. Jen, and G. W. Farnell  »View Author Affiliations

Applied Optics, Vol. 24, Issue 15, pp. 2341-2345 (1985)

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A material sensor based on differential spectroscopic absorption is proposed. The presence of a foreign material in a medium embodying the fiber sensor results in power attenuation at some particular wavelengths. This attenuation, which may be used for measuring the amount of the lossy material, is theoretically analyzed for the case of single-mode operation. A sensitivity analysis is carried out, and some design considerations are discussed.

© 1985 Optical Society of America

Original Manuscript: December 13, 1984
Published: August 1, 1985

A. Safaai-Jazi, C. K. Jen, and G. W. Farnell, "Optical fiber sensor based on differential spectroscopic absorption," Appl. Opt. 24, 2341-2345 (1985)

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  1. T. G. Giallorenzi, J. A. Bucaro, A. Dandridge, G. H. Sigel, J. H. Cole, S. C. Rashleigh, R. G. Priest, “Optical Fiber Sensor Technology,” IEEE J. Quantum Electron. QE-18, 626 (1982). [CrossRef]
  2. J. P. Dakin, “Optical Fiber Sensors-Principles and Applications,” Proc. Soc. Photo-Opt. Instrum. Eng. 374, 000 (1983).
  3. K. Chan, H. Ito, H. Inaba, “An Optical-Fiber-Based Gas Sensor for Remote Absorption Measurement of Low-Level CH4 Gas in the Near-Infrared Region,” IEEE/OSA J. Lightwave Technol. LT-2, 234 (1984). [CrossRef]
  4. P. Cielo, K. Cole, M. Lamontange, C. K. Jen, “Fiber-Optic Evanescent Wave Spectroscopic Analysis”; National Research Council of Canada, private communication (unpublished).
  5. G. T. Black, R. A. Johnson, “Fiber-Optic Moisture Sensor for Composite Structures,” U.S. Patent4,221,962 (9Sept.1980).
  6. S. T. Miller, A. G. Chynoweth, Optical Fiber Telecommunications (Academic Press, New York, 1979), Chap. 3.
  7. A. Safaai-Jazi, G. L. Yip, “Scattering from an Arbitrarily Located Off-Axis Inhomogeneity in a Step-Index Optical Fiber,” IEEE Trans. Microwave Theory Tech. MTT-28, 24 (1980). [CrossRef]
  8. A. Safaai-Jazi, “A Study of Mode Classification and Scattering from an Off-Axis Inhomogeneity in Step-Index Optical Fibers,” Ph.D. Thesis, McGill U., Montreal (1978), Chap. 6.
  9. A. Safaai-Jazi, G. L. Yip, “Cutoff Conditions in Three Layer Cylindrical Dielectric Waveguides,” IEEE Trans. Microwave Theory Tech. MTT-26, 898 (1978). [CrossRef]
  10. Ref. 5, p. 176.

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