Multi-Tbps Optical Interconnects (MuTOI)

The exponential increase of internet traffic and computing capacity is driving the demand for optical interconnect (OI) bandwidth, bandwidth density, and energy efficiency to unprecedented levels. While scaling of current technologies will satisfy the demands in the short term, radically new concepts and solutions are needed in the long term to enable multi-Tbps OIs, more complex OI architectures, a migration closer to the on-board silicon circuits, and significant energy savings. It is the purpose to enable such progress by bringing together leading expertise in optoelectronics, electronics, and optical communication to advance the state-of-the-art of OIs based on vertical cavity surface emitting lasers (VCSELs) and multimode fiber. We will develop new generations of devices and circuits for higher speed and more efficient transceivers, VCSEL arrays for new OI architectures based on space and wavelength division multiplexing, and apply more bandwidth efficient modulation formats and new electronic compensation techniques. Technology transfer and early exploitation of results is facilitated by close collaboration with Swedish industry and their active participation. We aim at demonstrating single channel OIs at 56 Gbps using binary modulation and 100 Gbps using multi-level modulation at an energy dissipation <1 pJ/bit. When applied to more advanced parallel OI architectures, enabled by the VCSEL arrays, this will allow for multi-Tbps aggregate interconnect capacities.


Anders Larsson (contact)

Professor at Microtechnology and Nanoscience, Photonics

Peter Andrekson

Professor at Microtechnology and Nanoscience, Photonics

Herbert Zirath

Professor at Microtechnology and Nanoscience, Microwave Electronics


Swedish Foundation for Strategic Research (SSF)

Funding years 2014–2019

Related Areas of Advance and Infrastructure

Information and Communication Technology

Area of Advance

Nanoscience & Nanotechnology

Area of Advance

Sustainable Development

Chalmers Driving Force

NFL/Myfab (Nanofabrication Laboratory)

Chalmers Research Infrastructure

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