The Optical Networking and Communication
Conference & Exhibition

San Diego Convention Center,
San Diego, California, USA

2019 Data Center Program


One city, one venue, three days to tap into the universe of Data Center optics

The world’s largest optical networking conference and exhibition, OFC encompasses the entire ecosystem for Data Center networking and connectivity. Meet OEMs and peers; service and content providers; network operators; and network, co-location, and cloud providers from around the globe. Find your vendors, peers and industry thought leaders at OFC.


Data Center Technology Trends to Look Out For at OFC

We expect many vendor announcements in 2019. In particular, we are expecting announcements and demonstrations in the following areas:

·         112 Gbps SERDES throughout the supply chain

·         Second generation 400 Gbps Ethernet switch and Router products

·         7nm semiconductor offerings to enable high-density 400 Gbps Ethernet Switches

·         Chiplet-based Ethernet Switch design to embrace disaggregation

Read more details.


Multivendor Interoperability Demos

Ethernet Alliance - 400GbE technologies and solutions;

OIF 400ZR, FlexE, Common Electrical I/O (CEI)-112G


Coherent Transceivers (pluggable CFP2-ACO and CFP2-DCO modules from multiple vendors  operating at 100Gbps)

Read more details.


The Role of Optics in Future Data Center and Computing Applications
Tuesday, 5 March 2019, 2:00 PM-6:30 PM

Data center and high-performance computing technologies are rapidly evolving to accommodate emerging applications such as artificial intelligence, data-centric workloads and IoT. Hardware acceleration, new memory technologies, high-capacity low-latency networking, and programmatic control are key enablers to optimize application performance and improve resource scalability. In this session, industry leaders and cutting-edge researchers will discuss the evolution of data center and computing architectures, related hardware and the role of optics in this context.


Panel: Beyond 400G for Hyperscale Data Centers
Thursday, 7 March 2019, 8:00 AM-10:00 AM

With 400G optics deployments on the horizon, what will be required next by hyperscale data centers? Do pluggable optical modules continue to scale to 800G/1.6T, or are new solutions required? What are the key technologies and enablers for next generation data center interconnect? What are the critical limitations and possible solutions? Panelists from hyperscale data centers, system companies, and module manufacturers, will share their views of what’s beyond 400G for hyperscale data centers.

Andy Bechtolsheim, Arista Networks, USA; Chris Cole, Finisar, USA; Peter De Dobbelaere, Luxtera, USA, Hong Liu, Google, USA, Clint Schow, University of California at Santa Barbara, USA, Rob Stone, Broadcom Inc., USA, Min Sun, Tencent, China


Opportunities and Challenges for Optical Switching in the Data Center
Sunday, 3 March 2019, 1:00 PM-3:30 PM

This workshop will review the hurdles faced by current electronic switching disciplines and will discuss the roadmap for introducing optical switching. We will explore key device, transmission, and network technologies that scale to realistic network sizes and will indicate the requirements posed on the underlying components. We will also discuss open challenges associated to the control of large optical data center infrastructures including the design of network controllers and dynamic schedulers for resource allocation and new routing and congestion-control protocols. 

Hitesh Ballani, Microsoft Corp., UK, Mike Frankel, Ciena Corp., USA, Benjamin Lee, IBM TJ Watson Research Center, USA, George Papen, University of California at San Diego, USA, Roberto Proietti, University of California Davis, USA, Eitan Zahavi, Mellanox Technologies, Israel


Workshop: Will Coherent Optics Become a Reality for Intra-data Center Applications?
Sunday, 3 March 2019, 1:00 PM-3:30 PM

Coherent technologies, where the phase of the optical carrier provides higher signal-to-noise ratios, have been used since 2010 for long-haul communications at data rates of 100Gb/s and beyond. In the near future, with the demand for even higher data throughputs, can the IMDD approaches satisfy this need? Will there be opportunities for coherent technologies? This topic has been discussed previously with many experts believing that short reach coherent technology based links are still many years away. This workshop will review recent developments and reexamine the outlook for coherent technologies. 

Jingchi Cheng, Alibaba Group, China; Chris Cole, Finisar, USA; Joseph Kahn, Stanford University, USA; Eric Maniloff, Ciena, Canada; David Plant, McGill University, Canada; Benn Thomsen, Microsoft Corp., UK; Winston Way, Neophotonics, USA


Workshop: Artificial Intelligence for Data Centers Operators and Optical Network Providers - Why and When?
Sunday, 3 March 2019, 4:00 PM-6:30 PM

Artificial Intelligence (AI) and Machine Learning (ML) are ubiquitously emerging at different levels within optical networks. This workshop aims at discussing the potential needs and advantages as well as limitations and risks of AI-driven solutions for a number of use cases. Both data center and optical transport networks viewpoints will be discussed, aiming at deployment status and expected potential to optimize network resource usage, introduce proactive solutions and ultimately reduce OPEX costs. 

Vittorio Curri, Politecnico di Torino, Italy;Jörg-Peter Elbers, ADVA Optical Networking SE, Germany; Jianqiang Li, Alibaba Group, USA;Victor Lopez, Telefonica, Spain;Kim Roberts, Ciena Corp., Canada;Rene Schmogrow, Google, USA;Takahito Tanimura, Fujitsu Laboratories Ltd., Japan;Massimo Tornatore, Politecnico di Milano, Italy;Darko Zibar, Danmarks Teknishe Universitet, Denmark


Workshop: Datacenter Optics Reliability: Can We Standardize Requirements, and Can They be Relaxed Given Redundancies and <~5-Year Lifetimes?
Sunday, 3 March 2019, 1:00 PM-3:30 PM

Although reliability requirements for data center optics are considered less stringent than for traditional telecom/datacom applications, the industry has yet to agree to a standard. Given the high performance, fast time to market, and low price demands, it has become critical for these requirements to be clearly understood and documented. This workshop will bring major datacenter operators, module suppliers, and component suppliers to the table to address these topics.

Chuck Harrel, Microsoft, USA; Bob Herrick, Intel, USA Kenneth P. Jackson, Sumitomo, Japan;John Johnson, Broadcom, USA;Omer Khayam, Infinera, USA;Helmut Knehr, Telcordia/Ericsson, Sweden;Osa Mok, Innolight Technology Corp., China;Ranjani Muthiah, Inphi, USA;Bill Ovenstone, Lumentum/Oclaro, USA;Chunchun Sui, Alibaba, China;Chris Theis, Finisar, USA; Vincent Zeng, Facebook, USA


Which One Will Succeed in Data Center Applications, Multi-Chip or Monolithic Integrated Optoelectronic Chip?
Sunday, 3 March 2019, 4:00 PM-6:30 PM

This workshop will discuss how to integrate photonic chips with electronic ICs for very high baud rates and large capacity. Pros and cons for monolithic or multi-chip integration approaches will be discussed. Advanced packaging techniques such as optics in packaging and on-board optics will be also covered. 

Peter De Dobbelaere, Luxtera, USA; Chris Doerr, Acacia Communications, USA; Frank Flens, Finisar, USA; Nick Kucharewski, Rockely Photonics, USA; Kazuhiko Kurata, AIO Core Co. Ltd., Japan; Vladimir Stojanovic, University of California Berkeley, USA; Lars Zimmermann, IHP, Germany.


Panel V: What's After 400G Ethernet Inside the Data Center
Thursday, 7 March 2019, 10:30 AM-12:00 PM

This session provides a window into what comes next after 400G networks. As our industry rolls out a full smorgasbord of 400G Ethernet solutions for data center communications, including new form factors, modulation techniques, ICs, and wavelengths, the question is how do we scale to 800G and 1.6T? This panel seeks to address the broad issue as well as specific technology issues. 

Brad Booth, Network Hardware Manager, Microsoft Corp., USA; Andy Bechtolsheim, Chief Development Officer and Chairman, Arista Networks, USA; Osa Mok, Chief Marketing Officer, InnoLight Technology Ltd., USA; Mark Nowell, Director of Engineering, Cisco Systems Inc., Canada; Claire Szu Ma, Senior Manager of Sales and Marketing, AOI, Taiwan; Jeff Twombly, Vice President of Marketing and Business Development, Credo Semiconductor, USA


The Evolution of Content Delivery at Netflix
Tuesday, 5 March 2019, 11:45 AM-12:15 PM

Dave Tempkin, VP of Networks, Netflix, USA


The Importance of "Open Transport" DCI Innovations in the Evolution of Metro and Long-haul Optical Networks
Tuesday, 5 March 2019, 12:15 PM -13:45:00 PM

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. 

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


The Access Network - Next Generation PON, Mobile and Cable Network Upgrades
Wednesday, 6 March 2019, 11:00 AM-12:30 PM

This panel will discuss case studies of next-gen PON deployments and deep fiber strategies of MSOs and mobile network operators from the network operator’s point of view. 

Frank J. Effenberger, Vice President and Fellow, Futurewei Technologies Inc.; Hongseok Shin, Senior Manager, SK Telecom, Korea

Accelight Technologies
Acacia Communications
Adolite, Inc.
ADVA Optical Networking
AIM Photonics
Albis Optoelectronics
Alight Technologies
Analog Devices
ATOP Corporation
Bandwidth10 Ltd.
Calient Technologies
Centera Photonics, Inc.
Ciena Corporation
Cisco Systems
Cosemi Technologies
Consortium for On-Board Optics (COBO)
CST Global, Ltd.
East Point Communication Technology Co., Ltd.
ECI Telecom
Elenion Technologies
Emcore Corporation
Ethernet Alliance Demo
Formerica Optoelectronics
Foxconn Interconnect Technologies
Fujitsu Network Communications
Fujitsu Optical Components
Hirose Electric USA
Hisense Broadband, Inc.
Huawei Technologies
HYC Co., Ltd.
IBM Canada
Innolight Technologies
INTEC E&C Co. Ltd.
Juniper Networks
Kaiam Corporation
Lightip Technologies
Lightron Fiber-Optics Devices
Linktel Technologies Co., Ltd.
Mellanox Technlogies
Menara Networks
Microsemi Corporation
ModuleTek Limited
nanoPrecision Products
Netcope Technologies
OFS Fiber
OIF Demo
Optelian Access Networks
PacketLight Networks
Reflex Photonics
Rockley Photonics
Sedona Systems
Semtech Corporation
SiFotonics Technologies Co., Ltd.
Skylane Optics
Sony Semiconductor Solutions Corporation
Source Photonics
Sumitomo Electric Device Innovations
Telecom Infra Project 
US Conec, Ltd.
ViaSat, Inc.
WaveSplitter Technologies, Inc.
XFS Communications, Inc.
Xgiga Communication Technology Co., Ltd.
ZTE Corporation

SC328 New Developments in High-speed Optical Networking: OTN beyond 100G, 100G/200G/400G Ethernet , Flex Ethernet
Sunday, 3 March 2019, 9:00 AM-1:00 PM

This course provides an introduction to a complementary set of technologies for high-speed optical networking including the Optical Transport Network (OTN) standardized by ITU-T Study Group 15, higher speed Ethernet (100 Gb/s, 200 Gb/s, 400 Gb/s) standardized by IEEE 802.3, and the Flex Ethernet implementation agreement developed by the Optical Internetworking Forum (OIF).

Instructor: Stephen Trowbridge, Nokia, USA

SC359 Datacenter Networking 101
Sunday, 3 March 2019, 9:00 AM-12:00 PM

This course describes architecture philosophies and technological considerations in constructing modern data center networks, with an emphasis on the roles of optical networking technologies. It covers the key optical technologies for intra and inter datacenter networks, the trade-offs among various implementation options and the trends in the next 3 to 5 years. 

Instructor: Hong Liu, Google, USA

SC 431 Photonic Technologies in the Data Center
Sunday, 3 March 2019, 1:00 PM-5:00 PM

This course compares the different optical technologies (including VCSELs, Si Photonics, and InP platforms) used in data centers today and identifies their strengths and limitations. It defines the requirements for photonic links at different levels of network hierarchy in terms of reach, power, cost, and density and describes the factors that have driven the current implementation of systems as well as future trends that will drive technologies. 

Instructor: Clint Schow, University of California at Santa Barbara, USA

SC385 Optical Interconnects for Extreme-scale Data Centers and HPC
Sunday, 3 March 2019, 5:00 PM-8:00 PM

This course provides an introduction to the system organization and architectures of today’s top supercomputers as well as the emerging interconnection networking challenges. It also covers the potential applications of integrated photonics in future supercomputing and datacenters including the design, power consumption, and performance analysis. 

Instructor: Keren Bergman, Columbis University, USA; John Shalf, Lawrence Berkeley National Laboratory, USA

SC428 Link Design and Modeling for Intra Data Center Optical Interconnects
Sunday, 3 March 2019, 5:00 PM-8:00 PM

This course provides an understanding of the components of short multimode fiber links, describes the basic elements of power budget and possible trade-offs. It identifies suitable models for various components of the link to be use in the design phase and provides in-depth insight in multimode fiber propagation, including launch conditions and connector effects. It also covers the advantages and disadvantages of advanced modulation formats in short optical interconnects. 

Instructor: Peter Pepeljugoski, IBM Research, USA

SC178 Test and Measurement for Data Center/Short Reach Communications
Monday, 4 March 2019, 8:30 AM-12:30 PM

This course covers measurement tools and techniques that characterize signal quality and how well it is maintained when transmitted through a data center/short reach optical system. It focuses on three measurement areas: bit-error-ratio (BER) analysis, oscilloscope waveform analysis with emphasis on the NRZ and PAM4 eye diagrams, and jitter analysis. 

Instructor: Greg D. LeCheminant, Keysight Technologies, USA

SC461 High-capacity Data Center Interconnects
Monday, 4 March 2019, 9:00 AM-12:00 PM

This course gives a broad overview of data center interconnect (DCI) architectures and technology, ranging from short-haul interconnects to metro and to long-haul deployments. This course gives a broad overview of data center interconnect (DCI) architectures and technology, ranging from short-haul interconnects to metro and to long-haul deployments. 

Instructor: Sander L. Jansen, ADVA Optical Networking, Germany; Dirk van den Borne, Juniper Networks, Germany

SC462 Introduction to Pluggable Optics
Monday, 4 March 2019, 1:30 PM-4:30 PM

This course covers the different pluggable optics solutions and form factors ranging from 1Gbps to the latest 400Gbps and the advantages and disadvantages of each. Detailed information is provided on optical and electrical technologies used, data rates supported, power classes, thermal challenges, and the overall dimensions, which determine the maximum front panel density for each of the form factors available. 

Instructor: Sharon Hall, Oclaro, USA; Robert Blum Intel Corp., USA

SC464 SDN Inside and In Between Data Centers
Monday, 4 March 2019, 1:30 PM-4:30 PM

This course explains each of the layers of the network, from the physical switches and fiber, through the software that runs on the switches, through the Software Defined Networking layers that provide a customizable virtual network while enabling the cloud platform to optimize its resource usage and automatically mitigate faulty equipment. Drawing examples from Microsoft Azure, the course covers how large cloud networks are designed and operate. 

Instructor: David Maltz, Microsoft, USA

Enabling Technologies for In-Router DWDM Interfaces for Intra-Data Center Networks (M1F.1)
8:00 AM - 8:00 AM     Invited Submission
As intra data center capacities continue to scale, transceiver interfaces are increasing in data rate, often employing multiple optical carriers. We consider an efficient hybrid solution using DWDM capable interfaces and optical switching.

Authors: K.P. Jones, Juniper Networks Inc., Kanata, Ontario, CANADA

Sparse Volterra Nonlinear Equalizer by Employing Pruning Algorithm for High-Speed PAM-4 850-nm VCSEL Optical Interconnect (M1F.2)
8:30 AM - 8:30 AM     Contributed Submission
A pruned Volterra equalizer that reduces computational complexity by up to 85.2% in 112-Gbps PAM-4 optical interconnects is proposed. The BER performance is competitive with LASSO-based Volterra equalizers, and training time is twice as fast.

Authors: C. Chuang, W. Chang, C. Ho, C. Huang, J. Chen, Department of Photonics, National Chiao Tung University, Hsinchu City, TAIWAN C. Wei, Department of Photonics, National Sun Yat-sen University, Kaohsiung , TAIWAN L. Henrickson, Department of Electrical Engineering, National Chung Hsing University, Taichung , TAIWAN Y. Chen, DARPA, Arlington, Virginia, UNITED STATES J. Shi, Department of Electrical Engineering, National Central University, Taoyuan, Virginia, TAIWAN

Error-Free 100Gbps PAM-4 Transmission over 100m OM5 MMF using 1060nm VCSELs (M1F.3)
8:45 AM - 8:45 AM     Contributed Submission
We experimentally demonstrate error-free (BER <10-12) rates beyond 100Gbps over 100m OM5 using unpackaged 1060nm VCSELs. Power penalties of PAM-2/PAM-4 are examined demonstrating OM5 fiber capacity to support wavelengths to 1060nm with only transmitter equalization.

Authors: J. Lavrencik, S. Varughese, A. Melgar, V.A. Thomas, S.E. Ralph, Georgia Institute of Technology, Atlanta, Georgia, UNITED STATES E. Simpanen, J. Gustavsson, A. Larsson, Chalmers University, Göteborg, Georgia, SWEDEN W.V. Sorin, S. Mathai, M. Tan, Hewlett Packard Enterprise, Palo Alto, California, UNITED STATES

SDM Fibers for Data Center Applications (M1F.4)
9:00 AM - 9:00 AM     Invited Submission
We will review the recent progresses on SDM fibers for short-reach transmission links. We will describe the design and properties of multicore fibers and discuss the potential applications for short-reach high-density interconnects in future data centers.

Authors: B. Zhu, OFS Laboratories, Somerset, New Jersey, UNITED STATES

K-means assisted soft decision of PAM4 to mitigate level nonlinearity and level-dependent noise for VCSEL-based 100-Gbps 100-m MMF optical interconnection (M1F.5)
9:30 AM - 9:30 AM     Contributed Submission
A likelihood ratio estimation method based on K-means clustering is proposed and experimentally demonstrated for soft decision of PAM4 to mitigate the level nonlinearity and level-dependent noise. Commercial-VCSEL-based 100-Gbps 100-m MMF optical transmission is achieved.

Authors: L. Sun, J. Du, Z. He, State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai, CHINA K. Xu, Department of Electronic and Information Engineering, Harbin Institute of Technology , Shenzhen, CHINA B. Liu, School of Physics and Optoelectronic Engineering in Nanjing University of Information Science & Technology, Nanjing, CHINA

Express Data Center Interconnection Using a Photonic Cross Connect (M2C.1)
10:30 AM - 10:30 AM     Contributed Submission
We present measurements of express optical interconnection between data centers using a MEMs photonic cross connect and a packet-optical transport network under the control of a programmable netOS for dynamic traffic steering and resiliency.

Authors: J.E. Simsarian, Y. Kim, D.T. Neilson, F. Pardo, N. Basavanhally, R. Farah, R. Papazian, M. Earnshaw, E. Sutter, S. Xu, M. Thottan, Nokia Bell Labs, Holmdel, New Jersey, UNITED STATES Y. Kim, Perspecta Labs, Basking Ridge, New Jersey, UNITED STATES S. Xu, Rutgers, The State University of New Jersey, Piscataway, New Jersey, UNITED STATES

Performance Assessment of a Novel Rack-scale Disaggregated Data Center with Fast Optical Switch (M2C.2)
10:45 AM - 10:45 AM     Contributed Submission
We investigate a novel disaggregated architecture based on nanoseconds optical switches. Results show that under data-traffic from real applications the disaggregated architecture with 0.2 local memory rate and 40Gb/s optical links outperforms the server-centric architecture.

Authors: X. Guo, F. Yan, X. Xue, G. Exarchakos, N. Calabretta, Eindhoven University of Technology, Eindhoven, NETHERLANDS

A Practical Approach to Optical Switching in Data Centers (M2C.3)
11:00 AM - 11:00 AM     Invited Submission
Optical switching can address the energy and bandwidth scaling challenges facing data center networks, but its adoption is impeded by the cost and complexity of associated hardware and control mechanisms. This paper discusses an approach that reduces cost and complexity by co-designing the hardware and overall network architecture.

Authors: W. Mellette, University of California San Diego, San Diego, California, UNITED STATES W. Mellette, inFocus Networks, San Diego, California, UNITED STATES

Enabling Technologies for Optical Data Center Networks: Spatial Division Multiplexing (M2C.4)
11:30 AM - 11:30 AM     Tutorial Submission
Spatial-division multiplexing (SDM) offers scaling up the transmission capacity, while reducing the number of fibers and patch cords, which simplifies cabling complexity. This tutorial will address challenges and recent developments of SDM techniques for optical datacenters.

Authors: L. Wosinska, R. Lin, J. Chen, KTH Royal Institute of Technology , Kista, Stockholm, SWEDEN L. Wosinska, E. Agrell, Chalmers University of Technology, Gothenburg, SWEDEN

Photonic Switching in Datacenters and Computing Systems (M3B.1)
2:00 PM - 2:00 PM     Tutorial Submission
We will discuss technologies, architectures, and control plane/data plane of photonic switching in data centers and computing systems. Scalability, throughput, latency, energy-efficiency, and system-wide impacts on data-systems will also be covered.

Authors: S. Yoo, University of California Davis, Davis, California, UNITED STATES

Low-Loss, Low-Crosstalk Large-Scale Silicon Photonics Switch (M3B.2)
3:00 PM - 3:00 PM     Invited Submission
We review research progress on the strictly-non-blocking optical switches based on the silicon photonics. The current switching performances including loss, crosstalk, bandwidth, and polarization insensitivity are summarized and their future prospects are discussed.

Authors: K. Suzuki, R. Konoike, S. Suda, H. Matsuura, S. Namiki, H. Kawashima, K. Ikeda, Natl Inst of Adv Industrial Sci & Tech, Tsukuba, IBARAKI, JAPAN

High-efficient Black-box Calibration of Large-scale Silicon Photonics Switches by Bacterial Foraging Algorithm (M3B.3)
3:30 PM - 3:30 PM     Contributed Submission
Black-box calibration algorithm is highly required for various large-scale silicon photonics devices. We demonstrated bacterial-foraging algorithm to calibrate random phase errors in 32×32 matrix switch by simulating switch as black-box, which promised ?2min calibration time.

Authors: G. Cong, N. Yamamoto, T. Inoue, M. Okano, Y. Maegami, M. Ohno, K. Yamada, AIST (Natl Inst of Adv Indust Sci&Tech), Tsukuba, IBARAKI, JAPAN

Silicon Photonic Wavelength and Mode Selective Switch for WDM-MDM Networks (M3B.4)
3:45 PM - 3:45 PM     Contributed Submission
A novel wavelength and mode selective switch for wavelength-division multiplexing and mode-division multiplexing networks was proposed and demonstrated on a silicon wafer. The fabricated chip integrated 20 thermo-optic elements, with a footprint of 2.3×1.4 mm2.

Authors: L. Han, B.P. Kuo, N. Alic, S. Radic, University of California San Diego, La Jolla, California, UNITED STATES

Optical Fibers for Short-Reach High-Density Interconnects (M3C.1)
2:00 PM - 2:00 PM     Invited Submission
Data centers are striving to meet the challenge of delivering more bandwidth density. In this paper, we discuss reduced diameter fiber designs that enable smaller cables and higher density interconnects for on-board and co-packaged optics.

Authors: S.R. Bickham, Corning Optical Communications, Corning, New York, UNITED STATES

Graded-index Standard Single-Mode Fiber for VCSEL Transmission around 850 nm (M3C.2)
2:30 PM - 2:30 PM     Contributed Submission
Graded-index standard single-mode fiber offers few-mode operation around 850 nm with better modal bandwidth over step-index fiber. We investigated feasibility of VCSEL transmission through link model analysis and demonstrated 100 m VCSEL transmission at 25Gb/s.

Authors: A. Juarez, X. Chen, J. Hurley, J. Stone, M. Li, Corning Research & Development Corp, Corning, New York, UNITED STATES M. Thiermann, Corning Optical Communications GmbH & Co. KG, Berlin, New York, GERMANY

Characterization of 30 µm Core Diameter Multimode Fiber for 200 Gb/s PM-16QAM Transmission at 1550 nm (M3C.3)
2:45 PM - 2:45 PM     Contributed Submission
We measure MPI and 1550 nm transmission of 200 Gb/s signals over long span and link lengths using 30 µm core diameter multimode fiber (MMF). MPI is reduced and reach increased compared to OM4 MMF.

Authors: J.D. Downie, X. Liang, J. Hurley, X. Chen, M. Li, Corning Research & Development Corp, Corning, New York, UNITED STATES

Wide Band Multimode Fiber with a 30 ?m-Core and Fluorine-Doped Cladding to Support Error-Free 4×25 Gb/s SWDM Transmission over 250 Meters (M3C.4)
3:00 PM - 3:00 PM     Contributed Submission
We propose multimode fiber with a 30 ?m-core and fluorine-doped cladding to achieve large bandwidth covering 850-940 nm. In experiment, Error-free 4×25 Gb/s SWDM transmission using commercial transceiver is demonstrated over 250 meter-long fiber.

Authors: Y. LIU, L. Ma, Z. He, Shanghai Jiao Tong University, Shanghai, CHINA W. Xiao, R. Wang, Z. He, Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan, CHINA

Modal Chromatic Dispersion Compensating Fiber Channels using 100G Multimode Optical Transceivers (M3C.5)
3:15 PM - 3:15 PM     Contributed Submission
Using 100G multimode transceivers, we measure bit error rate over 300 m of dispersion and non-dispersion compensating multimode fiber channels. For both 100GBASE-SR4 and 100GSWDM4 transceivers, all lanes showed performance advantages on dispersion compensating fiber.

Authors: A.S. Novick, J.M. Castro, R.J. Pimpinella, B. Kose, P. Huang, F. Jia, B. Lane, Panduit, Tinley Park, Illinois, UNITED STATES

Ultralow Loss Hollow-Core Conjoined-Tube Negative-Curvature Fiber for Data Transmission (M3C.6)
3:30 PM - 3:30 PM     Contributed Submission
We present a hollow-core conjoined-tube negative-curvature fiber with unique merits of ultralow loss of 2 dB/km at telecom band and launch-insensitive response to the data transmission in 10-Gb/s OOK test.

Authors: X. Wang, W. Ding, Y. Sun, CAS Institute of Physics, Beijing, CHINA X. Wang, Y. Wang, S. Gao, X. Zhang, P. Wang, Institute of Laser Engineering, Beijing University of Technology, Beijing, CHINA D. Ge, Y. Xin, J. Li, Z. Chen, State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing, CHINA

Polarization Effects on Thermally Stable Latency in Hollow-Core Photonic Bandgap Fibres (M3C.7)
3:45 PM - 3:45 PM     Contributed Submission
Hollow-Core fibers were recently demonstrated to have propagation time through them completely insensitive to changes in temperature. Here, we consider polarization dependent behaviour of these fibers and show how it can alter the fibre design.

Authors: E. Numkam Fokoua, W. Zhu, Y. Chen, S. Sandoghchi, T.D. Bradley, M.N. Petrovich, D.J. Richardson, F. Poletti, R. Slavik, University of Southampton, Southampton, UNITED KINGDOM W. Zhu, School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian, Liaoning, CHINA

Data Models for Optical Devices in Data Center Operator Networks (M3F.1)
2:00 PM - 2:00 PM     Invited Submission
Standardized, vendor agnostic data models deliver major operational benefits. OpenConfig has been implemented on multiple platforms and is an ideal data model to take advantage of these benefits. This document provides an overview.

Authors: E. Breverman, V. Vusirikala, N. El-sakkary, A. Shaikh, T. Hofmeister, Google, Pleasanton, California, UNITED STATES

Top Down Approach in Controlling and Managing Optical DC Networks (M3F.2)
2:30 PM - 2:30 PM     Invited Submission
Top Down Approach in Controlling and Managing Optical DC Networks

Authors: J. Gaudette, Microsoft Corp, Kirkland, Washington, UNITED STATES

Flexible Resource Allocation Using Photonic Switched Interconnects for Disaggregated System Architectures (M3F.3)
3:00 PM - 3:00 PM     Contributed Submission
We present an optically connected disaggregated system architecture that supports dynamic resource allocation, leveraging the optical spatial switching capability of silicon photonic microring-based interconnects and demonstrate compute nodes on-request access to remote memory and PCIe-based resources.

Authors: Z. Zhu, Y. Shen, Y. Huang, A. Gazman, M. Hattink, K. Bergman, Columbia University, New York, New York, UNITED STATES

Experimental Assessment of SDN-enabled Reconfigurable OPSquare Data Center Networks with QoS Guarantees (M3F.4)
3:15 PM - 3:15 PM     Contributed Submission
An SDN-controlled DCN enabling QoS-driven network-slice reconfiguration and packet priority updating is experimentally assessed. Network-slice can be reconfigured within 150 ms to decrease packet loss. The measured ToR-to-ToR latency of high-priority packets is 260.55 ns.

Authors: X. Xue, F. Wang, B. Pan, F. Yan, N. Calabretta, TU/e, Eindhoven, NETHERLANDS F. Agraz, A. Pagès, S. Spadaro, Universitat Politècnica de Catalunya, Barcelona, SPAIN

Data Center Interconnect Systems with Coherent Detection (M3H.1)
2:00 PM - 2:00 PM     Tutorial Submission
In this tutorial we will discuss the characteristics of between-datacenter optical interconnects, with distances of the order of 100km, and the cost-effective strategies to implement these very high speed optical links.

Authors: R. Nagarajan, Inphi Corporation, Santa Clara, California, UNITED STATES

A Low-Complexity Adaptive Equalizer for Digital Coherent Short-Reach Optical Transmission Systems (M3H.2)
3:00 PM - 3:00 PM     Contributed Submission
We propose a novel adaptive equalization algorithm for short-reach digital coherent systems targeting intra-datacenter applications. Its performance is similar to conventional method, while the number of real multipliers is reduced by ~65%.

Authors: J. Cheng, Alibaba Group, Hangzhou, CHINA M. Tang, S. Fu, Huazhong University of Sci. & Tech., Wuhan, CHINA C. Xie, Alibaba Group, Sunnyvale, California, UNITED STATES

Single Carrier vs. OFDM for Coherent 600Gb/s Data Centre Interconnects with Nonlinear Equalization (M3H.3)
3:15 PM - 3:15 PM     Contributed Submission
Single lambda coherent 600Gb/s solutions based on single carrier modulation or OFDM with and without bit and power loading are experimentally assessed. Volterra nonlinear equalization architectures are optimized for the most performant schemes.

Authors: C. Blümm, M. Schaedler, M. Kuschnerov, F. Pittala, C. Xie, Huawei, Munich, GERMANY

400G and Beyond: Coherent Evolution to High-Capacity Inter Data Center Links (M3H.4)
3:30 PM - 3:30 PM     Invited Submission
Coherent data transmission applications to the data center interconnect space are presented. We discuss methods of increasing the data rate beyond 400Gb/s, and the improvements in signal-to-noise ratio requirements when Ethernet optimized transport is used.

Authors: E.S. Maniloff, S. Gareau, M. Moyer, Ciena Corporation, Ottawa, Ontario, CANADA

Energy Consumption Modelling of Coherent Transmission in Data Centers (W1F.1)
8:00 AM - 8:00 AM     Invited Submission
We analyze energy consumption of coherent transmitters and receivers for intra- and inter-data center links and model trends in energy consumption of global-scale data center networks as the volume of traffic increases.

Authors: R.S. Tucker, University of Melbourne, Parkville, Victoria, AUSTRALIA

Comparison of Coherent and IMDD Transceivers for Intra Datacenter Optical Interconnects (W1F.2)
8:30 AM - 8:30 AM     Contributed Submission
We experimentally evaluated the performance of 400G coherent and IMDD transceivers for intra-datacenter interconnects, and showed that coherent transceivers can achieve a higher power budget with comparable ASIC power consumption.

Authors: J. Cheng, Alibaba Group, Hangzhou, CHINA Y. Chen, X. Chen, M. Tang, S. Fu, Huazhong University of Sci. & Tech., Wuhan, CHINA C. Xie, Alibaba Group, Sunnyvale, California, UNITED STATES

Achievable Rate Comparison between Entropy and Bit Loading in a 100-Gb/s DM-DD DMT System (W1F.3)
8:45 AM - 8:45 AM     Contributed Submission
We propose an efficient entropy loading (EL) scheme with NGMI target based on look-up tables. We reveal the EL superiority on channel coding over bit loading in a 100-Gb/s DM-DD DMT system, proving EL as the best capacity-approaching modulation for band-limited transceiver.

Authors: D. Che, Nokia Bell Labs, Holmdel, New Jersey, UNITED STATES D. Che, W. Shieh, The University of Melbourne, Melbourne, Victoria, AUSTRALIA

Direct-Detection Technologies for Intra- and Inter-Data Center Optical Links (W1F.4)
9:00 AM - 9:00 AM     Tutorial Submission
We present the evolution of fiber-optic communication systems, review the phenomena limiting the bitrate and reach of intensity modulation–direct detection-based systems, overview proposals for DSP-enabled direct detection, and conclude with coherent-lite for short reaches.

Authors: M. Chagnon, Transmission and DSP, Nokia Bell Labs, Stuttgart, Baden-Wurttemberg, GERMANY

Slotted Optical Datacenter Network with Sub-Wavelength Resource Allocation (W1J.1)
8:00 AM - 8:00 AM     Invited Submission
We describe the dynamic resource allocation problem in a slotted Datacenter network and present fast scheduling solutions to solve it. We then review scalability related issues.

Authors: K. Kontodimas, E. Varvarigos, National Technical University of Athens, Athens, GREECE K. Christodoulopoulos, L. Dembeck, Nokia Bell Labs, Stuttgart, GERMANY

Novel Lambda-Rich Torus DC Network: From Underlying Principles to Candidate Technologies (W1J.2)
8:30 AM - 8:30 AM     Invited Submission
We review the principles and technologies required for realizing a dynamic optical DC network comprising a few thousands of nodes based on new exploitation of ? resources and burst-mode transmission to enable scheduling-free optical flows/packets without collision

Authors: S.A. Ibrahim, T. Hashimoto, NTT Device Technology Laboratories, Atsugi-shi, KANAGAWA, JAPAN

OPTUNS: Optical Edge Datacenter Network Architecture and Prototype Testbed for Supporting 5G (W1J.3)
9:00 AM - 9:00 AM     Invited Submission
We present the architecture/testbed of an SDN-based optical-tunnel-network system (OPTUNS) for 5G edge-datacenters. Benchmarking results show that, compared to electrical-spine-leaf datacenter-network, OPTUNS achieves 82.6% power saving and significantly lower mean/p99 latency under high traffic load/locality.

Authors: M.C. Yuang, P. Tien, W. Ruan, C. Chen, Y. Luo, M. Tsai, National Chiao Tung University, Hsinchu, TAIWAN T. Lin, S. Wen, P. Tseng, C. Lin, Delta Electronics, Taipei, TAIWAN C. Chen, CYNTEC, Hsinchu, TAIWAN S. Zhong, Bandwidth Express LLC, Baltimore, Maryland, UNITED STATES

Achieving Ultralow-Latency Optical Interconnection for High Performance Computing (HPC) Systems by Joint Allocation of Computation and Communication Resources (W1J.4)
9:30 AM - 9:30 AM     Contributed Submission
We propose joint allocation of computation resource and optical transmission time slices to realize ultralow-latency optical interconnection in time-synchronized HPC systems. Results show that over 80% reduction in buffering time is achieved at high load.

Authors: R. Luo, Y. Yu, N. Hua, Z. Zhong, J. Li, X. Zheng, B. Zhou, Tsinghua University, Beijing, BEIJING, CHINA

Flat, Highly Connected Optical Network for Data Centers (W1J.5)
9:45 AM - 9:45 AM     Contributed Submission
A novel flat optical DC network approach using only low radix electrical switches and high data rate optical links is investigated. Compared to Clos, it provides resilience and ~40% hardware savings with ~60% higher throughput.

Authors: M.Y. Frankel, V. Pelekhaty, J.P. Mateosky, Ciena Corporation, Hanover, Maryland, UNITED STATES

BER Improvement of IM/DD Higher-Order Optical PAM Signal with Precise Non-Linearity Compensation (W4I.1)
4:30 PM - 4:30 PM     Contributed Submission
We introduce a precise Tx-side non-linear distortion compensation scheme for higher-order PAM signals, and experimentally show its effectiveness in 28 GBaud PAM-8 and 40 GBaud THP(Tomlinson Harashima Precoding)-PAM6 signals with more than 2-dB sensitivity improvement.

Authors: N. Kikuchi, R. Hirai, Hitachi Ltd, Yokohama, Kanagawa, JAPAN T. Fukui, Oclaro Japan, Sagamihara, Kanagawa, JAPAN

84 GBd Faster-Than-Nyquist PAM-4 Transmission Using Only Linear Equalizer at Receiver (W4I.2)
4:45 PM - 4:45 PM     Contributed Submission
Based on Tomlinson-Harashima precoding, we demonstrate 84 GBd PAM-4 transmission in an intensity-modulation direct-detection system with 33 GHz brick-wall bandwidth limitation. BER below 7% hard-decision FEC threshold is achieved using only linear equalizer at receiver.

Authors: Q. Hu, K. Schuh, M. Chagnon, F. Buchali, H. Buelow, Nokia Bell Labs, Stuttgart, GERMANY

200 Gbit/s (68.25 Gbaud) PAM8 Signal Transmission and Reception for Intra-Data Center Interconnect (W4I.3)
5:00 PM - 5:00 PM     Contributed Submission
In this paper, single carrier, single polarization 200 Gbit/s signal transmission for intra- DCI is demonstrated. Enabling by pre-equalization, adaptive-notch-filter and look-up-table, the BER of 68.25 Gbaud PAM8 signal is below 2.7×10-2 after 1-km SMF transmission.

Authors: F. Li, Z. Li, X. Yi, Z. Li, Sun Yat-Sen University, Guangzhou, GuangDong, CHINA Q. Sui, J. Li, Jinan University, Guangzhou, Guangdong, CHINA L. Li, Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CHINA

Demonstration of 260-Gb/s PS-PAM-8 IM/DD for Datacenter Interconnects (W4I.4)
5:15 PM - 5:15 PM     Contributed Submission
We experimentally demonstrated single-lane EML-based IM/DD 106-Gbaud PAM-4 and PS-PAM-8 signals transmission over 1-km NZDSF based on Pre-EQ and clipping technique. 260-Gb/s PS-PAM-8 signal transmission can be achieved.

Authors: J. zhang, J. Yu, ZTE TX Inc, Morristown, New Jersey, UNITED STATES J. zhang, L. zhao, J. shi, K. wang, X. Li, M. kong, W. Zhou, Fudan university, Shanghai, New Jersey, CHINA X. pan, B. Liu, X. Xin, Beijing University of Posts and Telecommunications, Beijing, New Jersey, CHINA L. zhang, Y. zhang, ZTE Corp, Beijing, New Jersey, CHINA

92-Gbaud PAM4 Transmission Using Spectral-Shaping Trellis-Coded-Modulation with 20-GHz Bandwidth Limitation (W4I.5)
5:30 PM - 5:30 PM     Contributed Submission
We propose a simple nonlinear trellis-coded-modulation to realize spectral-shaping for short-reach IM-DD transmission. Simulation results show the improvement of bandwidth-limitation and chromatic-dispersion tolerances. Experimental results show the achievement of 7% HD-FEC threshold in 184-Gb/s transmission.

Authors: S. Yamamoto, A. Masuda, H. Taniguchi, Y. kisaka, NTT Network Innovation Laboratories, NTT Corporation, Yokosuka, Kanagawa, JAPAN

255-Gbps PAM-8 Transmission under 20-GHz Bandwidth Limitation Using NL-MLSE Based on Volterra Filter (W4I.6)
5:45 PM - 5:45 PM     Contributed Submission
85-Gbaud PAM-8 transmission with BER below HD-FEC limit under 20-GHz bandwidth limitation is achieved applying NL-MLSE based on Volterra filter. NL-MLSE also achieves 3.84-Tbps O-band transmission using 4-? LAN-WDM and SDM over 2-km 4-core fiber.

Authors: A. Masuda, S. Yamamoto, H. Taniguchi, M. Nakamura, Y. kisaka, NTT, Yokosuka, Kanagawa, JAPAN

Beyond 200Gbps per Lane Intensity Modulation Direct Detection (IM/DD) Transmissions for Optical Interconnects: Challenges and Recent Developments (W4I.7)
6:00 PM - 6:00 PM     Invited Submission
All parts of an IM/DD system are being stretched to the limit as the single lane data rate approaches 200 Gbps and beyond. We report the recent developments on the key enablers conquering this target.

Authors: X. Pang, O. Ozolins, L. Zhang, R. Lin, R. Schatz, U. Westergren, S. Popov, J. Chen, KTH Royal Institute of Technology, Kista, SWEDEN O. Ozolins, A. Udalcovs, G. Jacobsen, NETLAB, RISE Research Institute of Sweden, Kista, SWEDEN L. Zhang, S. Xiao, W. hu, State Key Laboratory of Advanced Optical Communication System and Networks, Shanghai Jiao Tong University, Shanghai, CHINA X. Pang, Infinera, Stockholm, SWEDEN

Using Active Learning to Decrease Probes for QoT Estimation in Optical Networks (Th1H.1)
8:00 AM - 8:00 AM     Contributed Submission
We use active learning to reduce the number of probes needed for machine-learning-based QoT estimation. When building an estimation model based on Gaussian processes, only QoT instances that minimize estimation uncertainty are iteratively requested

Authors: D. Azzimonti, C. Rottondi, IDSIA, Manno, SWITZERLAND M. Tornatore, Electronics, Information and Bioengineering, Politecnico di Milano, Milano, ITALY

Deep-NFVOrch: Deep Reinforcement Learning based Service Framework for Adaptive vNF Service Chaining in IDC-EONs (Th1H.2)
8:15 AM - 8:15 AM     Contributed Submission
By leveraging deep reinforcement learning (DRL), we design Deep-NFVOrch as a novel service framework with resource pre-deployment to achieve adaptive virtual network function (vNF) service chaining in inter-datacenter elastic optical networks (IDC-EONs).

Authors: B. Li, W. Lu, Z. Zhu, Univ of Science and Technology of China, Hefei, AnHui, CHINA

Scheduling with Flow Prediction based on Time and Frequency 2D Classification for Hybrid Electrical/Optical Intra-datacenter Networks (Th1H.3)
8:30 AM - 8:30 AM     Contributed Submission
This paper first presents a 2D traffic classification-based flow prediction method and a corresponding resource allocation algorithm supported by B-RNN in intra-datacenter networks. Results show that the proposed method improves prediction accuracy and network performance.

Authors: A. Yu, H. Yang, Q. Yao, Y. li, J. Zhang, Beijing University of Posts and Telecomm, Beijing, BEIJING, CHINA H. Guo, T. Peng, H. Li, ZTE Corporation, Shenzhen, BEIJING, CHINA

Machine Learning-Based Traffic Prediction for Optical Switching Resource Allocation in Hybrid Intra-Data Center Networks (Th1H.4)
8:45 AM - 8:45 AM     Contributed Submission
This work presents a highly accurate traffic prediction model based on nonlinear autoregressive neural networks for efficient forecasting of heavy traffic streams in intra-data center networks. Its deep-learning version guarantees a prediction error of 10-10.

Authors: M. Balanici, S. Pachnicke, Kiel University, Kiel, GERMANY

Predictive Analytics in Hybrid Optical/Electrical DC Networks (Th1H.5)
9:00 AM - 9:00 AM     Invited Submission
We explain how to leverage knowledge-defined networking (KDN) to realize automatic network control and management (NC&M) for orchestrating the IT and bandwidth resources in a hybrid optical/electrical datacenter network (HOE-DCN).

Authors: Z. Zhu, W. Lu, L. Liang, B. Kong, Univ of Science and Technology of China, Hefei, ANHUI, CHINA

HPC Interconnects at the End of Moore’s Law (Th3A.1)
2:00 PM - 2:00 PM     Invited Submission
The tapering of lithography advances that have been associated with Moore’s Law will substantially change requirements for future interconnect architectures for large-scale datacenters and HPC systems.

Authors: J. Shalf, Lawrence Berkeley National Laboratory, Berkeley, California, UNITED STATES

Evolution of Pluggable Optics and What Is Beyond (Th3A.2)
2:30 PM - 2:30 PM     Invited Submission
Need to support higher speeds of Ethernet at high radix on datacenter switches is prompting new pluggable optic form factors, on-board optics and co-packaging of optics with switch ASICs to fulfill the evolutionary need.

Authors: J.J. Maki, Juniper Networks Inc., Sunnyvale, California, UNITED STATES

A 4-lane 400 Gb/s silicon photonic transceiver for intra-datacenter optical interconnects (Th3A.3)
3:00 PM - 3:00 PM     Contributed Submission
We present a four-lane silicon photonic transceiver for intra-datacenter optical interconnects. A net rate of 400 Gb/s is achieved at a bit error rate below the KP-4 forward error correction threshold of 2.4x10-4 .

Authors: E. Elfiky, A. Samani, M. alam, M. sowailem, O. Carpentier, M. Jacques, L. Guenin, D. Patel, D. Plant, McGill University, Montreal, Quebec, CANADA

Fabric-wide, Penalty-optimized Path Routing Algorithms for Optical Integrated Switches (Th3A.4)
3:15 PM - 3:15 PM     Contributed Submission
We propose a generic path routing algorithm that opts for the most favorable switch configuration set by an algorithmically-defined weighting-factor, which optimizes fabric-wide penalties and corrects for fabrication variations. Results demonstrate significant power penalty improvements.

Authors: Q. Cheng, Y. Huang, M. Bahadori, J. Zhou, M. Glick, K. Bergman, Columbia University, NewYork, New York, UNITED STATES

InP PIC's Scalability for Datacenter Applications (Th3A.5)
3:30 PM - 3:30 PM     Invited Submission
InP PIC fabrication platforms have seen an accelerated development over the recent years. Monolithic integration allows novel concepts in packaging and testing technology. Altogether they enable a ready to scale cost-effective InP PIC ecosystem.

Authors: B. Docter, K. Solis-Trapala, A. Albores-Mejia, EFFECT Photonics B.V., Eindhoven, NETHERLANDS

Advances in Hollow Optical Fiber Technologies and Applications (Th3E.1)
2:00 PM - 2:00 PM     Tutorial Submission
This talk will review 20 years of advances in hollow core optical fiber technology for a non-specialist audience, focusing on physical guidance mechanims, current and ultimate performance, and on applications in communications and more broadly.

Authors: F. Poletti, University of Southampton, Southampton, UNITED KINGDOM

Novel Antiresonant Hollow Core Fiber Design with Ultralow Leakage Loss Using Transverse Power Flow Analysis (Th3E.2)
3:00 PM - 3:00 PM     Contributed Submission
By analyzing transverse power flows in hollow core Nested Antiresonant Nodeless Fibers (NANFs), we devise a simple and realistically achievable structural improvement that promises over two orders of magnitude lower leakage loss than current state-of-the-art.

Authors: G.T. Jasion, D.J. Richardson, F. Poletti, Optoelectronics Research Centre, University of Southampton, Southampton, UNITED KINGDOM

Free Space Based Hollow Core Fiber Interconnection and Associated In-line Components (Th3E.3)
3:15 PM - 3:15 PM     Contributed Submission
We present compact, low-loss optical interconnection devices based on micro-collimator technology for hollow core fibers. Exemplar functional optical components (i.e. isolator and bandpass filter) are fabricated with low backreflection (<-47dB) and high modal purity (>20dB).

Authors: H. Kim, Y. Jung, Y. Chen, S. Rikimi, F. Poletti, D.J. Richardson, University of Southampton, Southampton, UNITED KINGDOM

Anti-Resonant Hollow Core Fibers (Th3E.4)
3:30 PM - 3:30 PM     Invited Submission
Hollow core fibers based on antiresonant confinement have demonstrated attractive properties including ultrashort pulse delivery, low attenuation at mid-infrared wavelengths, and damage-free delivery of light in the ultraviolet. Their potential for future development is discussed.

Authors: J.C. Knight, University of Bath, Bath, UNITED KINGDOM


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Dave Temkin, Vice President of Networks, Netflix, USA

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Data Center Summit Keynote: The Evolution of Content Delivery at Netflix

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