23 April 2017 Distributional measurement of effective refractive index differences of multimode fibers by Brillouin spectrum decomposition
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032382 (2017) https://doi.org/10.1117/12.2265447
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
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.
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Masashi Yokota, Masashi Yokota, Motoharu Miura, Motoharu Miura, Hiroki Watanabe, Hiroki Watanabe, Fumihiko Ito, Fumihiko Ito, Ryo Maruyama, Ryo Maruyama, Nobuo Kuwaki, Nobuo Kuwaki, } "Distributional measurement of effective refractive index differences of multimode fibers by Brillouin spectrum decomposition", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032382 (23 April 2017); doi: 10.1117/12.2265447; https://doi.org/10.1117/12.2265447
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