A two-section semiconductor optical amplifier is proposed and investigated for use as a power equaliser, providing a 3 dB output saturation power of 8 ± 1 dBm. Using the device to control the input power of a Mach-Zehnder wavelength converter, an increase in the input power dynamic range of the converter from 2.5 to > 20 dB is demonstrated at 10 Gbit/s.
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Emery et al. (1999) studied this question.
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