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We investigate the nonlinear crosstalk between a 10-Gb/s differential phase-shift keying (DPSK) signal and a 160-Gb/s optical time division multiplexing on-off keying (OTDM-OOK) signal in four-wave mixing (FWM) based wavelength conversion. Experimental results show that wavelength conversion of the DPSK signal is strongly susceptible to cross-phase modulation (XPM) caused by the OTDM-OOK signal. Error-free...
We demonstrate bit-rate flexible demodulation of differential phase-shift keying (DPSK) signals in a linear structure. The demodulator utilizes a tunable optical delay based on the combination of wavelength conversion in a photonic crystal fiber and dispersion in a short section of single-mode fiber. Error-free demodulations for return-to-zero-DPSK signals at both 25 and 40 Gb/s have been successfully...
By exploiting tunable optical delay between cascaded stages of four-wave mixing in a highly nonlinear photonic crystal fiber, we demonstrate error-free tunable demodulation of RZ-DPSK signals from 25 to 40 Gbit/s.
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