100GBIT S, 200-KM OPTICAL-TRANSMISSION EXPERIMENT USING EXTREMELY LOWJITTER PLL TIMING EXTRACTION AND ALL-OPTICAL DEMULTIPLEXING BASED ON POLARIZATION-INSENSITIVE 4-WAVE-MIXING/

Fully time-division-multiplexed 100Gbit/s optical transmission is succ essfully demonstrated through a 200km fibre, followed by PLL timing ex traction and 100 to 6.3Gbit/s all-optical demultiplexing based on pola risation-insensitive four-wave mixing. The prescaled, 0.3ps jitter 6.3 GHz clock is recovered from the 100Gbit/s signal using the four-wave m ixing light generated in a polarisation-insensitive 100GHz laser-diode -amplifier phase detector. Polarisation-insensitive four-wave mixing d emultiplexing is achieved by a polarisation rotating loop mirror confi guration.