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Differential Modal Gain Reduction using a Void Inscribed in a Two-Mode-Erbium Doped Fiber

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Abstract

Differential modal gain (DMG) reduction technique that uses laser-inscribed void is proposed. We reveal that DMG can be successfully controlled by introducing one void into two-mode-EDF while keeping the initial gain, NF and flatness.

© 2020 The Author(s)

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