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We proposed a hybrid C+L band fiber amplifier bridged with double-pass dispersion compensators. Power equalization among C+L band channels is realized by adjusting the FBGs reflectivity. Pumping efficiency is improved by recycling residual pump power.
A serial type, C+L-band hybrid amplifier based on a single pump laser diode is proposed. Dispersion management and gain equalisation among C+L-band channels are realised simultaneously. Pump reflectors and double-pass schemes are used to increase the pump slope efficiency. The power variation is reduced from 6.5 to 0.2 dB among C + L band channels.
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