Title :
168-Gb/s all-optical wavelength conversion with a symmetric-Mach-Zehnder-type switch
Author :
Nakamura, Shigeru ; Ueno, Yoshiyasu ; Tajima, Kazuhito
Author_Institution :
Syst. Devices & Fundamental Res., NEC Corp., Ibaraki, Japan
Abstract :
Error-free all-optical wavelength conversion at 168 Gb/s, which is the highest repetition rate ever reported, has been achieved by using a symmetric-Mach-Zehnder (SMZ)-type switch. Low-power-penalty 84-Gb/s operation is also demonstrated. The push-pull switching mechanism of the SMZ switch enables such ultrafast operation based on cross-phase modulation associated with the carrier depletion in a semiconductor optical amplifier. The configuration of the delayed-interference signal-wavelength converter, which is a simplified variant of the SMZ switch, is used in this experiment.
Keywords :
high-speed optical techniques; optical communication equipment; optical modulation; optical switches; optical wavelength conversion; semiconductor optical amplifiers; symmetry; time division multiplexing; 168 Gbit/s; 84 Gbit/s; Gb/s all-optical wavelength conversion; carrier depletion; cross-phase modulation; delayed-interference signal-wavelength converter; error-free all-optical wavelength conversion; low-power-penalty Gb/s operation; push-pull switching mechanism; semiconductor optical amplifier; symmetric-Mach-Zehnder-type switch; ultrafast operation; Bit rate; Logic; Nonlinear optics; Optical pulses; Optical signal processing; Optical switches; Optical wavelength conversion; Pulse modulation; Semiconductor optical amplifiers; Ultrafast optics;
Journal_Title :
Photonics Technology Letters, IEEE
