The Optical Networking and Communication
Conference & Exhibition

San Diego Convention Center,
San Diego, California, USA

Data Center Summit: Keynote

(This program is included in the free Exhibits Pass Plus Registration.)

Moderator: Loukas Paraschis, Senior Director for Cloud Transport System Engineering, Infinera, USA 

Tuesday, 5 March, 11:45-1215
Theater II, Hall E


Temkin Dave.JPGDavid Temkin, Vice President of Networks, ​Netflix, USA

  • The Evolution of Content Delivery at Netflix

    Reaching 150 million customers across the world, Netflix’s backbone and CDN connects studios around the world and delivers over 100 terabits per second of award-winning movies and TV. Dave’s teams are responsible for design, deployment, and operations of all elements of networking at Netflix, from script-to-screen.

Panel: The Importance of “Open Transport” DCI Innovations in the Evolution of Metro and Long-haul Optical Networks

Tuesday, 5 March, 12:15-13:45

Theater II, Hall E

Panel Description:

The capacity of the transport networks interconnecting data-centers (DCI) has grown more than any other traffic type this decade, motivating the evolution of packet and optical transport, and even of the Internet transport architecture.  Purpose-build DCI transport has achieved some of the most spectrally efficient WDM transmission deployments globally, currently exceeding 5 b/s/Hz, and has also pioneered “Open” transport architectures. 


The introduction of “open” optical transport architectures, which allow network operators to scale employing technologies from different optical system vendors that interoperate over the same fiber, has been one of the most widely debated topics in OFC the last 3-4 years.  It was initially proposed for inter-DCI transport, but it has since been increasingly adopted by many network operators, globally, and is currently considered as an important recent transport network evolution. It has also motivated multiple significant system and network innovations.  Most notably, “open” optical transport architectures have been extensively combined with the adoption of significant software innovations in network programmability, automation, control-plane disaggregation, and management abstraction, collectively usually referred to as “SDN”.  At the same time, flex-spectrum WDM systems and coherent transmission have also been instrumental for “open” optical transport.  


This panel will debate the adoption and main similarities and differences in open transport architectures for Inter-Data-Center, Metro and Long-Haul optical networks, and review the most important related innovations that enable the “open” optical transport evolution.  Among the many interesting related topics, this panel will particularly discuss:

• The main requirements of the new open transport network architectures,  

• The adoption, similarities and differences in open optical transport evolution among Inter-Data-Center, Metro and Long-Haul Networks,    

• The current and emerging technology innovations (hardware and software) for “open” optical transport.   



Kevin Dean, Chief Marketing Officer, euNetworks Group Limited, UK
Tad Hofmeister, Network Architect, Google, USA
Gaya Nagarajan, Senior Director, Facebook Network Engineering, USA
Glenn Wellbrock, Director of Optical Transport Planning, Verizon, USA
Yawei Yin, Optical Network Architect, Alibaba, China




Loukas-MPLS-WC_March-2014-improved.JPG Loukas Paraschis, Senior Director for Cloud Transport System Engineering, Infinera, USA 


Loukas Paraschis has been Senior Director for cloud transport system engineering at Infinera since 2016. Before, Loukas was Cisco’s Senior Technology Architect and business development manager for wireline transport in global service provider, and earlier was product line manager and technical leader in cisco’s routing and optical networking. Loukas graduated from Stanford University (PhD 1999, MS 1998) where he worked at the Information Systems and Networking Research laboratories. He has (co)authored more than 100 peer‐reviewed publications, invited and tutorial presentations, book chapters, and 5 patents, has served in many IEEE and OSA leadership positions, including the OFC and JOCN steering committees, as JOCN associated editor, IEEE Photonics Society Distinguished Lecturer (2009), and is an OSA Fellow (2011). He was born in Athens, Greece, where he completed his undergraduate studies.


Kevin-Dean.jpg Kevin Dean, Chief Marketing Officer, euNetworks Group Limited, UK

 Kevin Dean joined euNetworks Group Limited as Chief Marketing Officer in March 2014. He is responsible for   products, marketing, sales operations and strategic activities of the Company.

Prior to joining euNetworks, Mr. Dean worked for Interxion for 4 years where he held the position of Chief Marketing Officer. He was actively involved in the IPO of the company and also responsible for the marketing strategy, segment marketing and business development activity across Europe. Prior to this he spent 6 years at Colt telecom in senior marketing roles, and was also Vice President, Marketing at Cable & Wireless. Before moving into communications, Mr. Dean spent 10 years in the IT industry, giving him a unique perspective on the emerging cloud computing market.

He holds a Master of Business Administration, in addition to his first degree in Applied Physics. Mr. Dean is a fellow of the Chartered Institute of Marketing.


Tad-Hofmeister-July2018-cropped-2.jpgTad Hofmeister, Network Architect, Google, USA

Tad Hofmeister is a Network Architect at Google with a focus on scalable, cost-effective DWDM technologies and software management innovations. He is also an active participant and board member of the Optical & Internetworking Forum (OIF). Prior to working at Google, Tad was an architect, system engineer, and hardware designer for several optical transport and packet processing companies including: Ciena, Matisse Networks, OpVista, and Applied Signal Technology. Dr. Hofmeister earned MS and Ph.D. degrees in EE from Stanford University and BS degrees.


Tad-Hofmeister-July2018-cropped-2.jpgGaya Nagarajan, Senior Director, Facebook Network Engineering, USA

Gaya manages the Engineering team responsible for all architecture and engineering for network infrastructure outside of datacenters, comprising of both IP and Optical elements. Prior to joining Facebook, he worked at Brocade building and managing teams, focusing mainly on delivering products to large service& providers architectures. He has more than 10 years of experience in networking after completing his masters at University of Kansas.


Glenn-Wellbrock.jpgGlenn Wellbrock, Director of Optical Transport Planning, Verizon, USA

Glenn Wellbrock is the director of optical transport network architecture, design and planning at Verizon,where he is responsible for the development and deployment of new technologies for both the metro long haul transport infrastructure.

Prior to this position, Wellbrock ran the advanced technology lab, established evaluation criteria and set engineering guidelines for all backbone transport equipment as well as various positions within network operations.

In addition to his more than 20 years at Verizon (1984-2001 and 2004-present), Wellbrock was responsible for product architecture within the U.S. optical networks group at Marconi and product planning at Qplus Networks with a specific focus on developing alternative modulation techniques.


Yawei Yin.jpg Yawei Yin, Optical Network Architect, Alibaba, China

Yawei Yin is an Optical Network Architect at Alibaba Group with a focus on Open and Disaggregated DCI transport networks. He has been building both software and hardware platforms with different kinds of DCI transport equipment and writing software systems to control and manage optical network resources in DCI networks. He has also been actively contributing to the efforts of standardizing optical network’s data models through organizations such as OpenConfig. Prior to joining Alibaba, he worked at NEC Labs in Princeton, NJ conducting research and design on optical data center networks. He has (co)authored more than 70 peer-reviewed publications and book chapters and is the inventor of 6 patents. He has served in the technical program committee of many academic conferences including OFC, GLOBECOM, ICC, ICNC, etc. He holds a Ph.D degree in EE from Beijing University of Posts and Telecommunications (BUPT).

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