Abstract
Advances in optical fiber amplifier for optical network are reviewed in this paper. Considerable progress has been made in optical amplifier technology in recent years. The bandwidth of amplifiers has increased several times and flat gain amplifiers with more than 80 nm of bandwidth have been demonstrated. With the advent of Raman fiber amplifiers, more wider bandwidth is obtained. Progress has also been made in the understanding of amplifier gain dynamics. Several control schemes have been successfully demonstrated to mitigate the signal impairments due to fast power transients in a chain of amplifiers and will be implemented in optical network design. Terrestrial optical systems have been increasing in transmission capacity. In this review, we focus on the recent progress in some important aspects of several optical fiber amplifier technology.
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