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Decreasing energy limits for data transport have resulted in efforts to reduce energy consumption in optical interconnects. The authors introduce three possible integration techniques for realizing a hybrid silicon transmitter on a single chip with distributed feedback (DFB) lasers and electro-absorption modulators. They review the current bottlenecks and techniques for further reducing threshold...
We have demonstrated electrically driven photonic crystal nanocavity lasers, LEDs and modulators with record low operation powers (e.g., lasing threshold of 180nA and sub-fJ/bit modulator operation), and with the modulation speeds exceeding 10GHz.
This paper presents a study on the energy efficiency of adaptive optical OFDM in data center's networks. The DSP architecture of the proposed scheme is targeted to an FPGA and achieves more than 70% lower energy consumption compared to conventional OFDM modulation.
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