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We experimentally demonstrate a real-time quasi-full-duplex 400G/300 G optical interconnection over 20 km multicore fibers(MCFs), using 10G-class transponders operated in the C-band. Optical delay interferometer(ODI)-based optical frequency equalization is applied to mitigate chirp and dispersion induced impairments,so that the tolerance to inter-symbol interference(ISI) can be enhanced, thus enabling 4 × 25 Gb∕s on-off keying(OOK) transmission per core over severely limited bandwidth channels. Real-time bit error ratio(BER) performances of the bidirectional 400 Gb/s transmission are measured without using extra digital signal processing(DSP) or electrical equalization, which ensures low complexity and less power consumption.
Optical interference over 20 km multicore fibers (MCFs), using 10G-class transponders operated in the C-band. Optical delay interferometer (ODI) -based optical frequency equalization is applied to mitigate chirp and dispersion induced impairments, so that the tolerance to inter-symbol interference (ISI) can be enhanced, thus enabling 4 × 25 Gb / s on-off keying (OOK) transmission per core over severely limited bandwidth channels. Real-time bit error ratio (BER) performances of the bidirectional 400 Gb / s transmission are measured without using extra digital signal processing (DSP) or electrical equalization, which ensures low complexity and less power consumption.