1,721,081 research outputs found
All-optical Seed Pulse Extraction for Packets Synchronization Based on Self-induced Effects in a Vertical-Cavity Semiconductor Gate
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Regeneration of DPSK Signals in a Saturated SOA
No full textWe investigate and experimentally demonstrate a simple method for phase-preserving amplitude regeneration of constant envelope phase-coded signals. This scheme exploits nonlinear interaction between noisy data and a continuous wave beam at a different wavelength in a saturated semiconductor optical amplifier (SOA). We show that proper balancing of the input signals' power allows us to exploit the amplitude limiting effect of SOA saturated gain without introducing significant excess phase noise due to suppression of the α-factor in the amplifier. In a 10-Gb/s nonreturn-to-zero differential phase-shift-keying experiment, both four-wave-mixing (FWM) and pass-through signals are remarkably improved with respect to input data in terms of Q-factor and bit error ratio threshold margin, demonstrating wavelength preserving and wavelength converting regeneration. In particular, the FWM signal exhibits better regenerative performance over a broader range of degraded input data and for lower input overall power levels
Novel Time Domain Add/Drop Multiplexer Based On Double-Pumped Four-Wave-Mixing and Cross-Phase-Modulation Induced Spectral Shift in a Semiconductor Optical Amplifier
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Polarization- and Wavelength- Independent Time-Division Demultiplexing based on Copolarized-Pumps Four Wave Mixing in Semiconductor Optical Amplifiers
No full textA novel optical time-division demultiplexer based on
copolarized-pumps four-wave mixing in semiconductor optical
amplifiers is presented. The scheme is polarization and wavelength
independent. Effective 10-Gb/s channel extraction from
an optical time-division multiplexed 40-Gb/s aggregate frame is
experimentally demonstrated
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