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Mode-Equalized Distributed Raman Amplification in 137-km Few-Mode Fiber

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Abstract

We experimentally demonstrate 8 dB of mode-equalized distributed Raman gain using a backward pumping scheme. The equivalent noise figure of the amplifier is −1.5 dB, and the amplifier was successfully employed to demonstrate 6-channel mode-multiplexed MIMO transmission over 137-km few-mode fiber.

© 2011 Optical Society of America

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