“…Various types of optical signal processing have been demonstrated for ultra-high-speed OTDM data 1,10 , using not only fibres, but also compact devices such as semiconductor optical amplifiers (SOA), periodically poled lithium niobate waveguides (PPLN), chalcogenide waveguides and silicon nanowires. For the detection of OTDM data, optical demultiplexing and clock recovery are required.…”