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Proceedings Paper

Review of Brillouin-active fiber-based acousto-optic sensors
Author(s): Chung Yu; Yong K. Kim
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Paper Abstract

Brillouin active fibers, based on stimulated Brillouin scattering (sBs), have been extensively studied as ambient sensors by exploiting quartz fiber intrinsic acoustooptic properties[5-7]. Thus, the fiber is inherently a sensor, as opposed to fiber Bragg gratings, in which lines have to be photolithographically etched on the fiber by UV light. The sBs threshold enables sensing to be switched on and off in standard communication fibers, leading to fiber dual use. They have also been examined as combined optical and acoustic waveguides for joint optical and acoustic sensing. Success of these sensors lies in lowering the sBs threshold to achieve low power, short fiber length and multi-Stokes line generation. Numerous schemes have been proposed and tested, such as fiber rings, and they will be surveyed. The inherent optical feedback by the back-scattered Stokes wave leads to instabilities in the form of optical chaos. This paradigm of optical chaos serves as a test for fundamental study of chaos and its suppression and exploitation in practical application in communication and sensing.

Paper Details

Date Published: 9 September 2002
PDF: 8 pages
Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); doi: 10.1117/12.482028
Show Author Affiliations
Chung Yu, North Carolina Agricultural and Technical State Univ. (United States)
Yong K. Kim, North Carolina Agricultural and Technical State Univ. (United States)

Published in SPIE Proceedings Vol. 4920:
Advanced Sensor Systems and Applications
Yun-Jiang Rao; Julian D. C. Jones; Hiroshi Naruse; Robert I. Chen, Editor(s)

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