WS Optical technologies for the exascale cloud datacenter era

Optical technologies for the exascale cloud datacenter era



Hercules Avramopoulos National Technical University of Athens, Greece

Jeroen Duis TE Connectivity, Netherlands

Geert Morthier Ghent University – IMEC, Belgium 


List of topics the workshop will cover

  • Rack-to-rack, board-to-board, on-board and on-chip optical data links
  • Parallel optics for optical interconnection
  • Photonic active elements and systems (detectors, switches, modulators, transmitters)
  • Electro-optical printed circuit board technology for optical interconnects
  • Energy consumption in the datacenter environment
  • Optical interconnection interfaces


13:30-13:35 Welcome/Introduction


13:35-13:55 Facebook’s next generation Mega (and Micro) data centers technology
Katharine Schmidtke


The Facebook data centers and backbone had and will have tremendous bandwidth growth for years to come, to be able to address this growth we are constantly creating evolutionary and revolutionary optical technologies to interconnect our desegregated data centers internet and intranet. The talk will describe out optical strategy and our future technology drivers for success.


Biography: Katharine Schmidtke is currently responsible for Optical Technology strategy at Facebook. She has a Ph.D. In non-linear optics from Southampton University in the UK and did her post doctoral research at Stanford University. She has over 20 years experience in the Opto-Electronics industry including positions at Finisar and JDSU.



13:55-14:15 Moving past the Data Cliff – Photonic Interconnect Technologies for Data Centre Environments
Richard Pitwon


We consider the commercial factors gating the proliferation of optical interconnect in future data centre environments and the technologies enabling the migration of optical interconnect down from the switching tiers into the system enclosures themselves.


Biography: Richard Pitwon leads the photonics R&D group at Seagate, UK and has over 15 years experience in the development of high speed photonic interconnect technologies for data storage and communication systems. He is a Chartered Engineer (CEng) and holds 36 patents in the field of embedded optical interconnect. He serves as secretary of the International Electrotechnical Commission (IEC) standards group for optical circuit board technologies.



14:15-14:35 Optical switching in datacenter networks: Why and how?

Paraskevas Bakopoulos


Amidst soaring bandwidth demand, optical switching promises to rescue datacenters from an imminent capacity and energy crunch. Realistic deployment in datacenters opens up considerable opportunities and challenges. The talk will provide a holistic view, ranging from the photonic infrastructure to the network architecture and management..


Biography: Paraskevas Bakopoulos is a senior researcher at the Photonics Communications Research Laboratory, National Technical University of Athens. He is working on optical interconnect systems for datacom and computercom applications, currently within the European projects NEPHELE and MIRAGE. Paraskevas has co-authored more than 100 publications in peer-reviewed journals and conferences and holds one patent.



14:35-14:55 Interconnect Challenges in the Exascale World

Mike Tryson


Amidst the growth of datacenters to Exascale capacity puts increased emphasis on efficient architectures and interconnect technologies. The interconnect technology choices must balance key tradeoffs of interconnect input/output density, interconnect distance, speed (bandwidth), latency, and power/bit. This discussion will focus on the existing and emerging interconnect technologies that are enabling Exascale datacenters.


Biography: Mike Tryson is presently Senior Engineering Manager for TE Connectivity in the Data and Devices business unit. Principal responsibilities are development of optical product and solutions for data center applications, including passive optical interconnect, optical transceivers, active optical cables, and photonic IC technologies. Previous endeavors as Director of Product Development for Ciena’s DWDM product line, Project Manager of number of Aerospace and Defense Programs.


14:55-15:15 Optical interconnect technology for next-generation servers

Elad Mentovich



In this talk I would describe Mellanox's end-to-end Ethernet solutions in order to reach the challenge of 100 Gb/sec from the Server to the Storage. Furthermore, three LinkX 100Gb/s solutions would be described with a clear roadmap to future generations.


15:15-15:30 Open discussion


15:30-16:00 Coffee break



16:00-16:20 Si-photonic technologies for disaggregated datacenters
Marc Seifried


We address advancements in silicon photonics and electro-optical assembly methods for meeting future performance and cost requirements of optical interconnects in future datacenter systems..


Biography: Marc Seifried received his B.Sc. and M.Sc. in physics from Technical University Berlin, Berlin Germany in 2010 and 2014 respectively. In 2014 he joined the IBM Research Laboratory in Zurich Switzerland, where he is currently pursuing his Ph.D. on electro-optical integration of directly modulated lasers.



16:20-16:40  Ultralow-power integrated photonic crystal devices for on-chip photonic network applications
Masaya Notomi


Aiming for chip-scale optical network, we have been pursuing ultimately-small power/energy consumption for a series of integrable photonic devices (emitters/receivers/modulators, switches/memories and nonlinear devices) by nanophotonics technologies. Perspective for large-scale integration and key parameters to achieve smallest consumption will be discussed.


Biography: Masaya Notomi, Dr. is Senior Distinguished Scientist and Director of Nanophotonics Center at NTT Basic Research Laboratories, Japan, and heading Photonic Nanostructure Research Group. He is also Professor of Physics in Tokyo Institute of Technology. He has been working on nanophotonics and nanomaterials for optical device applications over 20 years. IEEE Fellow.



16:40-17:00 Roadmap for integration of InP-based photonics and silicon electronics
Kevin Williams


We identify the synergies and a roadmap for the intimate integration of InP photonic integrated circuits and Silicon electronic ICs using wafer-scale processes. Advantages are foreseen in terms of bandwidth, energy savings and package simplification.

Biography: Kevin Williams leads the Photonic Integration research group at the COBRA institute at the Eindhoven University of Technology. The Photonic Integration group has played a leading role in the integration of active lasers and amplifiers with a broad range of passive waveguide components on the generic InP integrated photonics platform.



17:00-17:20 InP-on-Si lasers for optical interconnects

Dries Van Thourhout

I will discuss new materials and device concepts currently being investigated to realize more compact and more power efficient active integrated devices (lasers and modulators), including graphene, III-V epitaxy on silicon and ferro-electric materials.


Biography: Dries Van Thourhout is a full professor at Ghent University and associated with imec, Europe’s largest nanoelectronics research institute. His research covers novel materials and device concepts for realizing complex photonic ICs. He has submitted 14 patents, has authored and coauthored over 180 journal papers (see below) and has presented invited papers at all major conferences in the domain. He has coordinated several European Projects (FP6 PICMOS, FP7 WADIMOS, FP7 SMARTFIBER), contributed in many more and is holder of an ERC Grant (ULPPIC). He received the prestigious "Laureaat van de Vlaamse Academie Van Belgie" prize in 2012.



17:20-17:40 Open discussion



Self-configuring optics for dense networks (Cancelled)
David A.B. Miller



Future dense interconnects will need both ultra-low energy optoelectronics and novel approaches to optics that reduce cost and improve performance. New architectures and algorithms for self-correcting and self-designing arrays offer new possibilities for optical systems.


Biography: David A.B. Miller is a Professor at Stanford University. His research interests include nanophotonics and fundamentals of optics in information switching and processing. He has published over 260 scientific papers, a quantum mechanics text, and 72 patents, has received many awards and Fellowships, and is a member of several national academies.

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