Preparing 25Gbps electrical I/O for exascale computing systems
Lei Shan, Young Kwark, et al.
ECTC 2014
We propose a flexible optical transmitter for the short-reach optical interconnects that includes a silicon photonic segmented Mach-Zehnder modulator driven by a distributed six-channel 32-nm silicon on insulator (SOI) complementary metaloxide semiconductor driver integrated circuit. Optical equalization is demonstrated to extend the bandwidth limitation of the transmitter with non-return to zero signaling at 25Gb/s. We also generate four-level pulse amplitude modulation (PAM-4) signaling using the same transmitter architecture. Transmission of 46 Gb/s PAM-4 signal with bit error rate (BER) well below hard-decision forward error correction limit is experimentally demonstrated. Low driver power consumption of 130 mW at 46Gb/s PAM-4, corresponding to 2.8 pJ/bit power efficiency, is also achieved.
Lei Shan, Young Kwark, et al.
ECTC 2014
Alex Forencich, Valerija Kamchevska, et al.
Journal of Lightwave Technology
Nicolas Boyer, Fuad Doany, et al.
ECTC 2020
Nicolas Dupuis, Benjamin G. Lee
Journal of Lightwave Technology