A GFDM-OFDM hybrid modulation scheme is experimentally demonstrated in a 60-Gb/s IM-DD system. 1.9-dB and 3.1- dB receiver sensitivity improvements are achieved compared to the conventional GFDM and OFDM signals in the back-to-back case, respectively.
We discuss light emitters and modulators in silicon photonic interconnects. In particular, we experimentally demonstrate resonant luminescence from Ge quantum dots embedded in a photonic crystal ring resonator (PCRR) at room temperature. Six sharp resonant peaks are observed, which correspond to the resonant modes supported by the PCRR. We further study a high speed silicon-graphene nanobeam modulator, and a silicon spatial light modulator. These devices show great potential in future high density and high capacity interconnection systems.
A 40Gb/s dynamic dispersion compensation system employing the tunable dispersion compensation device and the spectral shift in the semiconductor optical amplifier is demonstrated. The compensation accuracy can reach 5ps/nm, and the range is 400ps/nm.
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