All-Optical Signal Reshaping of a 40 Gb/s RZ Signal by Dual-Stage Pump Modulated Four-Wave-Mixing
All-optical signal reshaping is demonstrated with a 40 Gb/s RZ signal by using two cascaded pump modulated four-wave-mixing processes. A 5 dB improvement in the receiver sensitivity is reported for a degraded signal input.
Optical 2R regeneration using cascaded fiber four-wave mixing with suppressed spectral spread
A fiber four-wave mixing (FWM)-based all-optical reshaping and reamplifying (2R) regeneration technique with near-ideal step-like transfer function and suppressed spectral spread is proposed. By setting proper phase modulation conditions and wavelength relations in a two-stage cascaded FWM approach, we succeeded in nearly spectral-spread free 2R regeneration, and demonstration of improved performance for 10-Gb/s nonreturn-to-zero pseudorandom binary sequence data transmission.
Modeling of chemical reactors—XXIX mixing-cell model for packed bed reactors. Steady state considerations. Problems of multiplicity
Abstract The axial heat and mass transfer in tubular catalytic reactors may be described by mixing-cell model and diffusion model as well. The diffusion description yields for a strong exothermic reaction and adiabatic conditions three steady state profiles, on the other hand the mixing-cell model gives rise to more than three steady states. A simple numerical and graphical analysis for mixing-cell model is presented.