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Optical amplifier and a transmission system using the same

2025-06-19 14:401670下载
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The invention concerns an optical amplifier A, comprising : - a Raman amplifier A 1 which is provided with an internal Raman amplifier medium and carries out Raman amplification by said Raman amplification medium; and - a rare-earth doped fiber amplifier A 2 in which a rare-earth doped fiber is used as an amplification medium.


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