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We report a 1-chip MUX/DEMUX LSI that can handle mixed rate signals at over 10 Gb/s; it is the key technology for future optical access networks that offer highly efficient use of wavelengths in multi-wavelengths systems.
We experimentally demonstrate a 10-Gbit/s coherent QPSK-PON with a reduced bandwidth. Using a linear feed-forward equalizer with an adaptive algorithm, the bandwidth requirement is reduced down to 2.5 GHz with an approximate 0.5-dB power penalty.
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