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Proceedings Paper

Distributional measurement of effective refractive index differences of multimode fibers by Brillouin spectrum decomposition
Author(s): Masashi Yokota; Motoharu Miura; Hiroki Watanabe; Fumihiko Ito; Ryo Maruyama; Nobuo Kuwaki
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Paper Abstract

A novel method for distributionally evaluating the effective refractive index differences, Δneff, in multimode optical fibers is presented based on the Brillouin spectrum analysis. The proposed method is successfully demonstrated in GeO2-doped step-index 2-mode fibers, for evaluating Δneff between LP01 and LP11 modes, and the method could be straightforwardly expanded to fibers containing higher-order modes, by using a mode demultiplexer supporting the higher-order mode. To the authors’ best knowledge, this is the first report of distributional measurements of the effective refractive index differences in multimode optical fibers.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032382 (23 April 2017); doi: 10.1117/12.2265447
Show Author Affiliations
Masashi Yokota, Shimane Univ. (Japan)
Motoharu Miura, Shimane Univ. (Japan)
Hiroki Watanabe, Shimane Univ. (Japan)
Fumihiko Ito, Shimane Univ. (Japan)
Ryo Maruyama, Fujikura Ltd. (Japan)
Nobuo Kuwaki, Fujikura Ltd. (Japan)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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