Science Daily June 12, 2018
An international team of researchers (Sweden USA – Purdue University) reports the first coherent-transmission experiments using 64-quadrature amplitude modulation encoded onto the frequency lines of a dark-pulse comb. The high conversion efficiency of the comb enables transmitted optical signal-to-noise ratios above 33 dB, while maintaining a laser pump power level compatible with state-of-the-art hybrid silicon lasers. The research helps to better understand the formation of dark pulses in microresonators and their potential use in optical communications. The research could lead to faster and more power-efficient optical communication links in the future… read more. Open Access TECHNICAL ARTICLE
Frequency comb operation. Credit: Nature Communications volume 9, Article number: 1598 (2018)