Dual-Wavelength Conversion of 16QAM Signals Based on Four Wave Mixing in Semiconductor Optical Amplifier

Multichannel wavelength converters may be important components in the cross connects in future wavelength division multiplexing (WDM) optical network. We first present simulations of a scheme to perform dual-wavelength conversion of 16QAM signals based on four wave mixing (FWM) in semiconductor optical amplifier (SOA) without pump phase noise. The effectiveness of the proposed scheme is investigated by analyzing the spectrum diagram, constellation diagram and bit error rate (BER) of the output signal. BER measurements for four output channels show that power penalties are less than 1.2dB with respect to the input signals and small difference (