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arXiv · 1701.08569

Long-haul coherent communications using microresonator-based frequency combs

Attila Fülöp·Mikael Mazur·Abel Lorences-Riesgo·Tobias A. Eriksson·Pei-Hsun Wang·Yi Xuan·Dan E. Leaird·Minghao Qi·Peter A. Andrekson·Andrew M. Weiner·Victor Torres-Company
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Abstract

Microresonator-based frequency combs are strong contenders as light sources for wavelength-division multiplexing (WDM). Recent demonstrations have shown the potential of microresonator combs for replacing tens of WDM lasers with a single laser-pumped device. These experiments relied on microresonators displaying anomalous dispersion. Devices operating in the normal dispersion offer the prospect of attaining high power conversion efficiency - an aspect that will be crucial in the future for enabling energy-efficient coherent communications with higher order modulation formats or lighting several spatial channels in space-division multiplexing. Here we report the experimental demonstration of coherent communications using normal dispersion microresonator combs. With polarization multiplexed (PM) quadrature phase-shift keying, we transmitted data over more than 6300 km in single-mode fiber. In a second experiment, we reached beyond 700 km with PM 16 quadrature amplitude modulation format and an aggregate data rate above 900 Gbit/s assuming 6% error correction overhead. These results represent the longest fiber transmission ever achieved using an integrated comb source.

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Attila Fülöp, Mikael Mazur, Abel Lorences-Riesgo, Tobias A. Eriksson, Pei-Hsun Wang, Yi Xuan, Dan E. Leaird, Minghao Qi, Peter A. Andrekson, Andrew M. Weiner, Victor Torres-Company. 2017-01-30. Long-haul coherent communications using microresonator-based frequency combs. https://doi.org/10.1364/oe.25.026678

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