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Dynamic gain compensation in saturated erbium-doped fiber amplifiers

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4 Author(s)
E. Desurvire ; AT&T Bell Lab., Holmdel, NJ, USA ; M. Zirngibl ; H. M. Presby ; D. DiGiovanni

Dynamic compensation of low-frequency gain fluctuations in saturated erbium-doped fiber amplifiers is demonstrated. This compensation, based on a simple feedback-loop scheme makes it possible to reduce transient gain fluctuations efficiently across the whole amplifier bandwidth using only a low-power optical feedback signal. Such an, automatic gain control technique could be applied to suppress data packet interference due to traffic bursts in multiple-access networks, as well as in the implementation of long-haul fiber systems using erbium fiber amplifiers.<>

Published in:

IEEE Photonics Technology Letters  (Volume:3 ,  Issue: 5 )