Optical TDM transmission techniques toward Tbit/s

Ultra-high speed optical time-division-multiplexed (TDM) transmission is one of the key technologies to realize future Tbit/s optical networks. We reported 400 Gbit/s optical TDM transmission using high-speed optical techniques such as short pulse generation by mode-locked fiber-ring-laser (ML-FRL) combined with supercontinuum (SC), time-division multiplexing by the planar-lightwave-circuits (PLC), prescaled phase-lock-loop (PLL) timing extraction using four-wave-mixing (FWM) in a semiconductor laser amplifier, and all-optical demultiplexing using FWM. We show the experimental setup of a 400 Gbit/s transmission experiment. We used 0.98 ps transform-limited optical pulses and the 400 Gbit/s signal was successfully transmitted through 40 km