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We transmit 32 WDM channels over 12 spatial and polarization modes of 177 km few-mode fiber at a record spectral efficiency of 32 bit/s/Hz. The transmitted signals are strongly coupled and recovered u...
Successful transmission of up to 300 Mbps over a 50 m long POF link using a commercially available Fast Ethernet capable RC-LED is presented. Carrierless Amplitude Phase modulation was used with 16- a...
Transmission of 5x62 Gbit/s polarization multiplexed coherent OFDM is demonstrated over 80 km SSMF. Using 64-QAM and 16-QAM simultaneously allows reducing the channel spacing and makes a net spectral ...
8x66.8-Gbit/s DWDM transmission is demonstrated over 640-km SSMF with 9-GHz channel spacing. Employing coherent detected polarization-division-multiplexing OFDM with 16-QAM subcarrier modulation, a re...
We have successfully transmitted a three-channel frequency division multiplexed 1-Gsymbol/s, 64 QAM coherent optical signal over 160-km with a 1.4-GHz spacing. The spectral efficiency reaches as high ...

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