Ultrafast optical circuit switching for data centers using integrated soliton microcombs

Arslan Sajid Raja, Sophie Lange, Maxim Karpov, Kai Shi, Xin Fu, Raphael Behrendt, Daniel Cletheroe, Anton Lukashchuk, Istvan Haller, Fotini Karinou, Benn Thomsen, Krzysztof Jozwik, Junqiu Liu, Paolo Costa, Tobias Jan Kippenberg () and Hitesh Ballani ()
Additional contact information
Arslan Sajid Raja: Swiss Federal Institute of Technology Lausanne (EPFL)
Sophie Lange: Microsoft Research
Maxim Karpov: Swiss Federal Institute of Technology Lausanne (EPFL)
Kai Shi: Microsoft Research
Xin Fu: Swiss Federal Institute of Technology Lausanne (EPFL)
Raphael Behrendt: Microsoft Research
Daniel Cletheroe: Microsoft Research
Anton Lukashchuk: Swiss Federal Institute of Technology Lausanne (EPFL)
Istvan Haller: Microsoft Research
Fotini Karinou: Microsoft Research
Benn Thomsen: Microsoft Research
Krzysztof Jozwik: Microsoft Research
Junqiu Liu: Swiss Federal Institute of Technology Lausanne (EPFL)
Paolo Costa: Microsoft Research
Tobias Jan Kippenberg: Swiss Federal Institute of Technology Lausanne (EPFL)
Hitesh Ballani: Microsoft Research

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract Due to the slowdown of Moore’s law, it will become increasingly challenging to efficiently scale the network in current data centers utilizing electrical packet switches as data rates grow. Optical circuit switches (OCS) represent an appealing option to overcome this issue by eliminating the need for expensive and power-hungry transceivers and electrical switches in the core of the network. In particular, optical switches based on tunable lasers and arrayed waveguide grating routers are quite promising due to the use of a passive core, which increases fault tolerance and reduces management overhead. Such an OCS-network can offer high bandwidth, low network latency and an energy-efficient and scalable data center network. To support dynamic data center workloads efficiently, however, it is critical to switch between wavelengths at nanosecond (ns) timescales. Here we demonstrate ultrafast OCS based on a microcomb and semiconductor optical amplifiers (SOAs). Using a photonic integrated Si3N4 microcomb, sub-ns (

Date: 2021
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DOI: 10.1038/s41467-021-25841-8

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