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Semiconductor optical amplifiers: Beyond their role as transmitters in fiber-optic systems, laser diodes can be made to amplify light, perhaps promising simple all-optical repeaters

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2 Author(s)
S. Kobayashi ; NTT, Tokyo, Japan ; T. Kimura

Following a brief overview of two decades of research, a discussion is presented of two types of optical amplifiers whose noise limits effective gain. Direct optical repeaters and optical amplifiers as preamps are also examined.

Published in:

IEEE Spectrum  (Volume:21 ,  Issue: 5 )