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Proceedings Article

Novel fiber devices and sensors based on multimode fiber Bragg gratings

[+] Author Affiliations
Keith H. Wanser, Karl F. Voss

California State Univ./Fullerton (USA)

Alan D. Kersey

Naval Research Lab. (USA)

Proc. SPIE 2360, Tenth International Conference on Optical Fibre Sensors, 265 (September 14, 1994); doi:10.1117/12.185051
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From Conference Volume 2360

  • Tenth International Conference on Optical Fibre Sensors
  • Glasgow, United Kingdom | October 11, 1994

abstract

Two categories of multimode fiber Bragg grating (MMFBG) are possible, independent mode and mode coupling, each leads to novel types of fiber devices and sensors. All-mode, wave optics calculations of the reflectivity of independent mode MMFBG are presented, including the effects of individual mode power changes due to microbending transducer loss upstream from the grating. MMFBG offer added flexibility in grating design and performance characteristics compared to single mode FBG, since the reflectivity response may be tuned by the spatial periodicity, length, core size, numerical aperture, and mode coupling characteristics of the grating. New sensing and diagnostic methods that are possible with these gratings and some methods for sensor addressing and multiplexing are described.

© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Keith H. Wanser ; Karl F. Voss and Alan D. Kersey
"Novel fiber devices and sensors based on multimode fiber Bragg gratings", Proc. SPIE 2360, Tenth International Conference on Optical Fibre Sensors, 265 (September 14, 1994); doi:10.1117/12.185051; http://dx.doi.org/10.1117/12.185051


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