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Optical OFDM is a promising technology for increasing the bit-rate per WDM channel. The transmission experiments of 400 Gbit/s OFDM signal per WDM channel with 4bit/s/Hz and 8bit/s/Hz spectral efficiency are explained.
We have developed a highly compact monolithically integrated lightsource for 100GbE. Error-free transmission over 40-km on single-mode fiber under 100-Gbit/s operation is achieved, showing the usefulness of the device for future compact 100GbE transmitters.
We demonstrate an all-optical wavelength-routing switch monolithically integrated with four wavelength converters and an 8times8 arrayed-waveguide-grating (AWG) filter. In the switch, double-ring-resonator-coupled tunable laser diodes allow rapid and stable switching between output ports (~5 ns) and optical gates based on a parallel amplifier structure prevent the input optical signal from being routed...
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