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We report four-channel discrete multi-tone modulation using silicon photonic circuits with net channel rates of 100 Gb/s and 70 Gb/s detected by commercial and germanium receivers, respectively. Transmission up to 4-km fiber is presented.
Over an 8-rack, 32-server WDM-based all-optical switching data center network, we show the network upgrade using single-wavelength or multi-wavelength 100 Gbps signals, and further show the mixed-line-rate interoperability between 100 Gbps and 10 Gbps signals.
Real-time detection of a 40 Gbit/s polarization-multiplexed square 16-QAM signal is demonstrated in an FPGA-based intradyne coherent receiver processing 100% of data. A minimum BER of 3.3×10-5 is achieved.
Real-time polarization division multiplexed coherent optical OFDM receiver is demonstrated to receive 28.6-Gb/s data per optical wavelength in single intradyne detection. QPSK modulated sub-carriers are detected using 9.83-GS/s ADCs and DSP implemented on three FPGAs.
We report on an optical intradyne receiver experiment with frequency estimation. Frequency estimation allows, if performed prior to block phase estimation or other phase recovery techniques, for a much higher frequency difference between transmit laser and local oscillator laser. We demonstrate the feasibility of our approach in a 20-Gb/s quadrature phase-shift keying experiment
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