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Intermodal measurements in few-mode fibers with phase- sensitive OTDR

Luc Thévenaz, Zhisheng Yang, Alejandro Dominguez Lopez
2020
Poster talk
Abstract

We experimentally verify the possibility of measuring the difference in effective refractive index between higher-order-modes using a phase-sensitive OTDR, indicating that it is possible to measure the average difference over long fiber spans.

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