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Detailed theoretical investigation of the input power dynamic range for gain-clamped semiconductor optical amplifier gates at 10 Gb/s

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5 Author(s)
Wolfson, D. ; Center for Broadband Telecommun., Tech. Univ., Lyngby, Denmark ; Danielsen, S.L. ; Joergensen, C. ; Mikkelsen, B.
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A detailed theoretical investigation of the input power dynamic range for gain-clamped semiconductor optical amplifier (GC-SOA) gates at 10 Gb/s is presented. We show that although the gain is clamped, the dynamic changes of the carrier distribution in the GC-SOA causes pattern effects on a time scale given by the relaxation frequency of the GC-SOA. Combined with a higher noise figure compared to a conventional SOA, this results in a dynamic range only /spl sim/0.5 dB better than for an optimized SOA gate.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 9 )