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We demonstrate extinction ratio improvement at 80 Gbit/s wavelength conversion using a single semiconductor optical amplifier cascaded with a delay interferometer and band pass filters. The output extinction ratio can be improved from 3.2 dB to 20 dB.
We theoretically discuss 40 Gb/s semiconductor optical amplifier (SOA)-based wavelength conversion (WC) using a detuning optical bandpass filter. Both inverted and non-inverted WCs are obtained by shifting the filter central wavelength with respect to the probe wavelength when input data signal is RZ format. The filter detuning is essential to different output formations
All-optical wavelength conversion (WC) based on transient cross-phase modulation (T-XPM) of semiconductor optical amplifier (SOAs) is a promising approach to accelerate the gain recovery of SOAs. An analytical solution is deduced to explain the polarity variation of WC based on T-XPM of SOAs from the viewpoint of the impulse response functions. We conclude that both inverted and noninverted WCs can...
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