The Optical Networking and Communication
Conference & Exhibition

San Diego Convention Center,
San Diego, California, USA

Data Center Summit

(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, 11:45-12:15
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, 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.   



Tad Hofmeister, Network Architect, Google, USA
Matthew Mitchell, Director, Facebook Optical Network Engineering, USA
Glenn Wellbrock, Director of Optical Transport Planning, Verizon, USA
Chongjin Xie, Senior Director and Chief Communication Scientist , 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.


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.


Matthew Mitchell, Director, Facebook Optical Network Engineering, USA
Matthew Mitchell manages the Facebook Engineering team responsible for optical transport infrastructure outside of datacenters covering the metro, long haul, and subsea space.  Prior to joining Facebook, he served as VP of Optical Systems Architecture at Infinera Corporation, and held positions at Corvis Corporation and Lucent Bell Laboratories.  He earned his MS and Ph.D. degrees in Electrical Engineering from Princeton University in 1995 and 1998, respectively.  He has co-authored over 30 peer-reviewed publications and holds 28 patents in the area of optical transmission and nonlinear optics.


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.jpgChongjin Xie, Senior Director and Chief Communication Scientist , Alibaba Infrastructure Service, Alibaba, China

Chongjin Xie is a senior director and chief communication scientist in Alibaba Infrastructure Service, Alibaba Group, leading an optical network research, architecture, design and testing team to develop datacenter optical interconnects and networking technologies to support Alibaba online platform and cloud services. Prior to joining Alibaba Group in 2014, Dr. Xie was a Distinguished Member of Technical Staff at Bell Labs, Alcatel-Lucent, doing research on optical communication systems and networks. He did his postdoctoral research at Chalmers University of Technology in Sweden from 1999 to 2001, and received his M.Sc. and Ph.D. degrees from Beijing University of Posts & Telecommunications in 1996 and 1999, respectively. Dr. Xie has published one book, 4 book chapters and over 200 journal and conference papers. He is a program chair of OFC’2019, served as chairs, TPC chairs or TPC members in many conferences and an associate editor of Journal of Lightwave Technology. Dr. Xie is a Fellow of OSA and a senior member of IEEE.

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