Chapter 68. A Novel Sapphire Fiber-Optic Sensor for Testing Advanced Ceramics

  1. John B. Wachtman Jr.
  1. M. A. El-Sherif1,
  2. I. L. Kamel1,
  3. F. K. Ko1,
  4. M. Shaker1,
  5. D. J. Roth2,
  6. B. Lerch2 and
  7. S. Swickard2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314180.ch68

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

How to Cite

El-Sherif, M. A., Kamel, I. L., Ko, F. K., Shaker, M., Roth, D. J., Lerch, B. and Swickard, S. (2008) A Novel Sapphire Fiber-Optic Sensor for Testing Advanced Ceramics, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch68

Author Information

  1. 1

    Fibrous Materials Research Center, Drexel University, Philadelphia, PA

  2. 2

    NASA Lewis Research Center, Cleveland, OH

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375266

Online ISBN: 9780470314180

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Keywords:

  • waveguide;
  • polycrystalline;
  • intrinsic sensor;
  • optical signals;
  • modulation

Summary

The development of an optical sapphire waveguide for high temperature applications is presented. An optical grade sapphire fiber was used as the core of the waveguide. This fiber was coated with a layer of polycrystalline alumina to construct the cladding layer of the waveguide. This optical waveguide can be coated with a protective layer such as silicon carbide and used as an intrinsic sensor for on-line testing of ceramic materials. Preliminary investigations with this approach appear to be very promising in terms of confining optical signals within the fiber core.