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Broad-band all-optical wavelength conversion of differential phase-shift keyed(DPSK) signal is experimentally demonstrated.This scheme is composed of a one-bit delay interferometer demodulation stage followed by a semiconductor optical amplifier(SOA) based nonlinear polarization switch.A wavelength converter for the10 Gb/s DPSK signal is presented,which has a wide wavelength range of more than 30 nm.The converted signals experience small power penalties less than 1.4 dB compared with the original signal,at a bit error rate of 10~(-9).Additionally,the optical spectra,the measured waveforms and the open eye diagrams of the converted signals show a high quality wavelength conversion performance.
Broad-band all-optical wavelength conversion of differential phase-shift keyed (DPSK) signal is experimentally demonstrated. This scheme is composed of a one-bit delay interferometer demodulation stage followed by a semiconductor optical amplifier (SOA) based nonlinear polarization switch. A wavelength converter for the 10 Gb / s DPSK signal is presented, which has a wide wavelength range of more than 30 nm. The converted signals experience small power penalties less than 1.4 dB compared with the original signal, at a bit error rate of 10 ~ ( -9). Additionally, the optical spectra, the measured waveforms and the open eye diagrams of the converted signals show a high quality wavelength conversion performance.