The Optical Networking and Communication
Conference & Exhibition

San Diego Convention Center,
San Diego, California, USA

Data Center Technical Talks

Data Center Schedule Monday, 12 March Tuesday, 13 March Wednesday, 14 March Thursday, 15 March
Network Techno-economics (M1A) 08:00-10:00      
DSP Techniques for High-order QAM (M1C) 08:15-10:00      
Lasers for Data Center Interconnects (M1I) 08:15-10:00      
Data Center and Integration (M3F) 14:00-16:00      
Data Center & PON Transponder Technology (Tu2B)   14:00-16:00    
Devices for Interconnects (W1I)     08:00-10:00  
Optical Switching in Data Centers (W1C)     08:15-10:00  
Multimode Fibers for Datacenters (W3C)     14:00-16:00  
High Speed Devices for Data Centers (W4D)     16:30-18:15  
Data Center Traffic Management (W4I)     16:30-18:30  
Photonic Networks for Data Centers (Th1G)       08:15-10:00
Data Center Interconnect Deployments (Th3F)       14:00-15:00
Optical Switching Sub-systems (Th3H)       14:00-15:45

Network Techno-economics (M1A)

Techno-Economic Evaluations of 400G Optical Interconnect Implementations for Datacenter Networks (M1A.1)
08:00 - 08:15
Presenter: Theodoros Rokkas, Athens Information Technology, inCITES Consulting
The cost evolution and power consumption of different 400G transceivers are modeled and the benefits of constructing and scaling the Facebook’s datacenter Fabric utilizing different technologies is presented through comparative cost and power consumption analysis

Fiber type dependent benefits when deploying up-to-300Gb/s elastic transponders adapting to ageing of margins (M1A.2)
08:15 - 08:30
Presenter: Jelena Pesic, Nokia Bell Labs
We compare cost savings when planning a WDM French backbone network based on SSMF or LEAF, with 32 GBaud elastic optical transponders adapting their capacity from 100 to 300 Gb/s to the actual ageing margins.

A Statistical Assessment of Networking Merit of 2MxN WSS (M1A.3)
08:30 - 08:45
Presenter: Mattia Cantono, Politecnico di Torino
We assess the networking impact in terms of blocking probability and device counts of a novel low-contention probability network node. We show no significant penalties with respect to full-CDC solutions in a metro network scenario

Network Design Framework to Spectral- and Cost-Efficiently Exploit Next-Generation Line Interfaces (M1A.4)
08:45 - 09:00
Presenter: Daniela Moniz, Coriant Portugal, Instituto de Telecomunicações
This paper proposes a network design framework for phased service provisioning with current- and next-generation high symbol rate line interfaces. Network simulations show that both cost- and spectral-savings can be attained over the network lifecycle.

Agile Optical Networking: Beyond Filtered Solutions (M1A.5) - Invited
09:00 - 09:30
Presenter: Christine Tremblay, Ecole de technologie supérieure
Filterless optical networks based on broadcast-and-select nodes and coherent transceivers are attractive cost-effective and flexible solutions in core networks. In this talk, we explore the suitability of filterless architectures in metropolitan core and aggregation networks.

Minimizing the Cost and Augmenting the Resilience of Vulnerable Optical Transport Networks (M1A.6)
09:30 - 09:45
Presenter: Bodhisattwa Gangopadhyay, Coriant
This paper proposes an architecture combining high density muxponders, universal OTN switching, flexi-rate line interfaces and a cost-optimized node clustering scheme to enhance network resiliency without compromising the total cost of ownership (TCO).

Modular SDN-enabled S-BVT Adopting Widely Tunable MEMS VCSEL for Flexible/Elastic Optical Metro Networks (M1A.7)
09:45 - 10:00
Presenter: Michela Svaluto Moreolo, Ctr Tecnològic de Telecom de Catalunya
We propose an SDN-enabled S-BVT adopting directly-modulated tunable VCSEL with direct-detection for optical metro networks and spectrum defragmentation. We experimentally assess it over different network paths up to 185km and in presence of adjacent slices.


DSP Techniques for High-order QAM (M1C)

Single-carrier 48-GBaud PDM-256QAM transmission over unrepeated 100km single-mode-fiber using commercially available μITLA and LN-IQ-modulator (M1C.1)
08:15 - 08:30
Presenter: Asuka Matsushita, NTT Corporation
Record symbol-rate PDM-256QAM single-carrier transmission of 100km is achieved using commercially available laser and modulator with only applying compensation for linear frequency response of transceiver and receiver; device nonlinearity compensation is not used.

Improving Achievable Information Rates of 64-GBd PDM-64QAM by Nonlinear Transmitter Predistortion (M1C.2)
08:30 - 08:45
Presenter: Robert Elschner, Fraunhofer HHI
We assess the gains in achievable information rate for 64-GBd PDM-64QAM signal transmission with Volterra-based digital predistortion of nonlinear transmitter components and show an improvement of up to 0.6 bit/4D-symbol over conventional linear predistortion.

Advanced DSP Technologies with Symbol-rate over 100-Gbaud for High-capacity Optical Transport Network (M1C.3) - Invited
08:45 - 09:15
Presenter: Masanori Nakamura, NTT Network Innovation Laboratories
100-Gbaud-class systems are promising candidates for over 400-Gbps serial long-haul transport without increasing the number of transponders. We review DSP technologies, e.g. signal generation, calibration, post compensation and advanced modulation for realizing 100-Gbaud-class transceivers.

Experimental Validation of a Channel Estimation Algorithm for Transmitter-side Digital Pre-compensation Filters (M1C.4)
09:15 - 09:30
Presenter: Sjoerd van der Heide, Institute for Photonic Integration (IPI), Eindhoven University of Technology
A channel estimation algorithm is introduced and experimentally validated with a 112-Gbit/s PAM-4 transmission system. The algorithm is shown to estimate overall system bandwidth and demonstrates pre-compensation gains ranging from 0.8 to 1.5 dB.

Reception of Burst Mode High-Order QAM Signals with Pilot-Aided Digital Signal Processing (M1C.5)
09:30 - 09:45
Presenter: Chen Zhu, Bell Laboratories, Nokia
We present pilot-assisted burst mode DSP design for high-order QAM signals. Short preambles are used for frame, frequency synchronization and channel estimation. The proposed scheme is experimentally demonstrated to detect 16G-baud PDM 128/256/512-QAM bursts.

Digitally Enhanced DAC: Low-Resolution Digital Pre-Compensation for High Speed Optical Links (M1C.6)
09:45 - 10:00
Presenter: Yaron Yoffe, Ben Gurion University of the Negev
A novel algorithm is proposed to overcome bandwidth limitation using low resolution DACs. We demonstrate electrical back-to-back 32Gbaud QAM-64 over 11GHz and optical 32Gbaud QAM-4 over 5GHz using 4 bits and 2.6 bits DACs respectively


Lasers for Data Center Interconnects (M1I)

Optimum VCSEL Apertures for High-Speed Multimode Fiber Links (M1I.1)
08:15 - 08:30
Presenter: Justin Lavrencik, Georgia Institute of Technology
Cross-correlations of VCSEL transverse mode groups with different apertures are used to predict dispersion dependent RIN. Experiments with wideband multimode fiber confirm the noise enhancement dependence on aperture, which increases with fewer mode VCSELs.

726.7-Gb/s 1.5-µm Single-Mode VCSEL Discrete Multi-Tone Transmission over 2.5-km Multicore Fiber (M1I.2)
08:30 - 08:45
Presenter: Joris Van Kerrebrouck, UGent
A 107Gb/s net-rate DMT optical signal was generated using a single-mode long-wavelength VCSEL with a modulation bandwidth of 23GHz. We experimentally demonstrated a total net-rate up to 726.7Gb/s at 1.5µm over 2.5km 7-core dispersion-uncompensated MCF.

51.56 Gbps PAM4 Transmission over up to 2.3 km OM4 Fiber using Mode Selective VCSEL (M1I.3)
08:45 - 09:00
Presenter: Reza Motaghian, Finisar
Record bit-rate-distance-products of 118.6 and 51.6 Gbps×km were achieved for PAM4 and NRZ transmission over a single OM4 fiber using mode-selective VCSEL. The OMA penalty was 3.1 dB for 51.56-Gbps-PAM4 transmission over 1.6km OM4 at BER of 5×10-5.

7×100 Gbps PAM-4 Transmission over 1-km and 10-km Single Mode 7-core Fiber using 1.5-μm SM-VCSEL (M1I.4)
09:00 - 09:15
Presenter: Xiaodan Pang, KTH Royal Institute of Technology, Rise Acreo AB
100 Gbps/λ/core PAM-4 transmission is successfully demonstrated over 1-km and 10-km single mode 7-core fiber links, enabled by directly modulated 1.5-μm single mode VCSEL of 23 GHz modulation bandwidth with pre- and post- digital equalizations.

Net 100 Gbit/s Eight-dimensional Formats Loaded Discrete Multitone Transmission Using 850 nm Multimode VCSEL (M1I.5)
09:15 - 09:30
Presenter: Xiaofeng Lu, Technical University of Denmark
We demonstrate a discrete multi-tone transmission loaded with eight-dimensional formats with 0.25-bit granularity, enabling a net 100-Gbit/s transmission over 100 m MMF, with and without power loading, and investigate its benefits on the reach, power, and thermal tolerance.

Parameter Extraction through Joint Optimization of Modulation Response and RIN Spectra (M1I.6)
09:30 - 09:45
Presenter: Alirio Melgar, Georgia Institute of Technology
Extraction of VCSEL rate equation model parameters through joint optimization of modulation response and RIN spectra is presented. It accurately accounts for both ISI and noise, and employs drive-dependent parasitics found in VCSELs.

A 14 Gb/s Directly Modulated Hybrid Microring Laser Transmitter (M1I.7)
09:45 - 10:00
Presenter: Ashkan Roshan Zamir, Texas A&M University
The first demonstration of a hybrid-integrated directly modulated microring laser transmitter operating up to 14 Gb/s operation is reported. A CMOS driver with an asymmetric 2-tap feed-forward compensates for the microring laser non-linear dynamics.


Data Center and Integration (M3F)

AIM Process Design Kit (AIMPDKv2.0): Silicon Photonics Passive and Active Component Libraries on a 300mm Wafer (M3F.1)
14:00 - 14:15
Presenter: Erman Timurdogan, Analog Photonics
A new process design kit (AIMPDKv2.0) is introduced that offers a verified silicon photonics component library on 300mm silicon-on-insulator wafers. The library includes multi-layer waveguides, polarization manipulation, switches, filters, and high-speed digital/analog detectors and modulators.

Wafer-scale high-density edge coupling for high throughput testing of silicon photonics (M3F.2)
14:15 - 14:30
Presenter: Robert Polster, Columbia University
High-throughput functional testing of silicon photonics is a key challenge for scalable manufacturing. We present a technique for wafer-scale testing using high-density edge couplers that add excess loss of 2.2dB without requiring additional footprint.

High performance InP PIC technology development based on a generic photonic integration foundry (M3F.3) - Invited
14:30 - 15:00
Presenter: Francisco Soares, Fraunhofer Inst Nachricht Henrich-Hertz
Abstract not provided.

Silicon Photonics Platform for 400G Data Center Applications (M3F.4)
15:00 - 15:15
Presenter: Dong Pan, SiFotonics Technologies, Co., Ltd
We demonstrate a silicon photonic platform for 400G data center 500m to 120km applications. The silicon platform has successfully integrated a variety of C-band and O-band passive and active optical components, and has successfully demonstrated PSM4, 64Gbaud ICR, 64Gbaud ICTR PIC capable of 400G applications.

100G SWDM Transmission over 250m OM5 and OM4+ Multimode Fibers (M3F.5)
15:15 - 15:30
Presenter: Earl Parsons, CommScope
We demonstrate 100G SWDM4 transmission over 250m OM5 and OM4+ multimode fibers. Error-free performance was achieved with the OM5 fibers. The OM4+ fibers did not support error-free performance due to low bandwidth at longer wavelengths.

VCSEL-Based Optical Transceivers for Future Data Center Applications (M3F.6) - Invited
15:30 - 16:00
Presenter: Jim Tatum, Finisar Corporation
Progress on VCSELs and Photodiodes for 56Gbps/channel data links is reported for both PAM4 and NRZ modulation formats.


Data Center & PON Transponder Technology (Tu2B)

Revolutionizing the Data Centers and HPCs - Optical Interconnects (Tu2B.1) - Invited
14:00 - 14:30
Presenter: Tolga Tekin, Fraunhofer IZM
Abstract not provided.

A Compact 212.5-Gbit/s Transmitter Optical Sub-Assembly with DMLs and Quad Linear Driver (Tu2B.2)
14:30 - 14:45
Presenter: Naoki Itabashi, Sumitomo Electric Industries, Ltd.
We present a compact 212.5-Gbit/s transmitter optical sub-assembly equipped with directly modulated lasers and quad 53.125-Gbit/s linear driver. We demonstrate high-quality and high-output-power operation with low-power consumption (1.01 W), which is desirable for 200GBASE-LR4 application.

Low-Cost Hybrid-Integrated Micro-Intradyne Coherent Receiver Using FPCB wirings (Tu2B.3)
14:45 - 15:00
Presenter: Seo young Lee, ETRI
We report on a low-cost hybrid-integrated Micro-ICR based on a silica DP-OH and InP WG-PDs. RF and DC FPCB wirings provide low-cost and good RF performance. A 3-dB bandwidth is measured to be ~36 GHz.

SOA for future PONs (Tu2B.4) - Invited
15:00 - 15:30
Presenter: Rene Bonk, Nokia, Bell Labs
SOA applicability to provide up to 35 dB power budget for high-rate T(W)DM-PON is analyzed. Booster and pre-amplifier in PON-applications will have utmost importance in 50 Gbit/s/λ IM-DD and could also be applied in coherent access solutions.

25G Based PON Technology (Tu2B.5) - Invited
15:30 - 16:00
Presenter: Ed Harstead, Nokia
Commercial PONs have traditionally leveraged mature components from transport systems. Starting with 25G PON, the data center ecosystem will be leveraged. A strategy to accommodate higher loss budgets at lower cost is presented.


Devices for Interconnects (W1I)

Silicon Photonics for 56G NRZ Optical Interconnects (W1I.1) - Invited
08:00 - 08:30
Presenter: Joris Van Campenhout, imec
We discuss recent progress in the performance of modulators and photodetectors co-integrated in a silicon photonics platform, and capable of operation in the O-band or C-band at 56Gb/s single-lane NRZ data rates and beyond.

Error-Free Loopback of a Compact 25 Gb/s x 4 ch WDM Transceiver Assembly Incorporating Silicon (De)Multiplexers with Automated Phase-Error Correction (W1I.2)
08:30 - 08:45
Presenter: Tomoyuki Akiyama, PETRA, Fujitsu Laboratories Ltd.
We propose (de)multiplexers based on tunable cascaded asymmetric Mach-Zehnder interferometers to exclude necessity of highly-scaled expensive Si process by fully-automated fabrication error correction, and demonstrate an error-free loopback with a 12x12 mm transceiver assembly.

A single-laser flexible-grid WDM silicon photonic transmitter using microring modulators (W1I.3)
08:45 - 09:00
Presenter: Wei Shi, Université Laval
We report a flexible-grid WDM silicon photonic transmitter by monolithic integration of a microring modulator based comb generator with multi-channel modulators. It shows simultaneous multi-channel data transmission at different channel spacings without significant signal degradation

Monolithic Optical Transceivers in 65 nm Bulk CMOS (W1I.4)
09:00 - 09:15
Presenter: Amir Atabaki, Massachusetts Institute of Technology
We present the integration of optical passive and active components next to millions of nano-scale bulk silicon transistors through a single deposited layer of polysilicon on silicon oxide islands. We demonstrate 10 Gb/s monolithic O-band optical transceivers on this platform.

Zn-Diffusion/Oxide-Relief 940 nm VCSELs with Excellent High-Temperature Performance for 50 Gbit/sec Transmission (W1I.5)
09:15 - 09:30
Presenter: Jin-Wei Shi, National Central University
940nm VCSELs with small resistances (35Ω) and ultra-wide E-O bandwidths from room-temperature (31GHz) to 85oC (29GHz) operations are demonstrated. It achieves 50Gbps error-free transmission over 50m OM5 fiber without using equalization and pre-emphasis techniques.

85°C Operation of 850 nm VCSELs Deliver a 42 Gb/s Error-Free Data Transmission for 100 meter MMF Link (W1I.6)
09:30 - 09:45
Presenter: Hsiao-Lun Wang, Micro and Nanotechnology Laboratory
850nm VCSELs record performance of 46Gb/s (RT), 43Gb/s (75°C) and 42Gb/s (85°C) error-free transmission for a 100 meter MMF link are reported without the use of equalizer or forward error correction.

High-Speed High-Efficiency Broadband Silicon Photodiodes for Short-Reach Optical Interconnects in Data Centers (W1I.7)
09:45 - 10:00
Presenter: SOROUSH GHANDIPARSI, University of California, Davis
We demonstrate a silicon-based surface-illuminated CMOS-compatible broadband photodiode with ≤30ps FWHM and above 55% EQE at 850nm for up to 50Gb/s by using photon-trapping micro/nano-structures. This is the fastest reported response for a Silicon photodiode.


Optical Switching in Data Centers (W1C)

dReDBox: Demonstrating Disaggregated Memory in an Optical Data Centre (W1C.1)
08:15 - 08:30
Presenter: Arsalan Saljoghei, University College London
This paper showcases the first experimental demonstration of disaggregated memory using the dRedBox optical Data Centre architecture. Experimental results demonstrate the 4-tier network scalability and performance of the system at the physical and application layer.

Disaggregated Optical Data Center in a Box Network using Parallel OCS Topologies (W1C.2)
08:30 - 08:45
Presenter: Hui Yuan, University College London
Two parallel OCS topologies are proposed that deliver 95 nsec round-trip latency on disaggregated optical data center in a box system. They offer 40% cost and 68% power consumption efficiency at maximum IT resource utilization.

Bridging the Last Mile for Optical Switching in Data Centers (W1C.3) - Invited
08:45 - 09:15
Presenter: Paolo Costa, Microsoft Research
Optical switches promise to revolutionize data centers by providing high bandwidth and low latency at low cost. This paper discusses some of the remaining challenges that need to be solved to make this technology successfully deployed in production.

Decision Tree Classification based Mix-flows scheduling in Optical Switched DCNs (W1C.4)
09:15 - 09:30
Presenter: Cen Wang, BUPT, KDDI Research Lab
We propose a novel mix-flows scheduling strategy assisted with decision tree based flow classification for optical switched DCNs. Experimental results show it can effectively lower the completion time of small interactive flows and Coflows.

An Overview of the Open Compute Project and Next-Generation Data Centers (W1C.5) - Invited
09:30 - 10:00
Presenter: Omar Baldonado, Facebook Inc.
This talk covers the Open Compute Project (OCP), a collaborative community focused on redesigning hardware technology to efficiently support the growing demands on compute infrastructure. This is especially relevant for optics in next-generation data centers.


Multimode Fibers for Datacenters (W3C)

Recent advances on MMFs for WDM and MDM (W3C.1) - Invited
14:00 - 14:30
Presenter: Denis Molin, PRYSMIANGROUP
We show how multimode fibers, that have always been flexible transmission media, can be adapted to wavelength division multiplexing in data communications and mode division multiplexing in telecommunications to keep up with capacity increase.

Universal fibers for both single-mode and multimode transmissions in data centers (W3C.2) - Invited
14:30 - 15:00
Presenter: Xin Chen, 1. Corning Research and Development Corporation
Universal fiber is a single medium that can support both multimode and single-mode transmission. We present the fiber properties and system performance at 100G and discuss the benefit of using it in data center.

Study of Dispersion Compensating Multimode Fiber for Future VCSEL PAM-4 Channels at Data Rates over 100 Gb/s (W3C.3)
15:00 - 15:15
Presenter: Asher Novick, Panduit
We study the effects of dispersion compensating multimode fiber for data rates exceeding 100 GB/s using 4-level pulse amplitude modulation (PAM-4). Performances of different data rates, fibers, and VCSEL bias currents are compared.

Spectral Dependence of Multimode Fiber Modal Bandwidth (W3C.4)
15:15 - 15:30
Presenter: Jose Castro, Panduit
We theoretically and experimentally investigate the modal bandwidth spectral dependence behavior of OM3 and OM4 fibers in support of the development of future multi-wavelength transceivers.

Graded-index seven-core fiber optimized for high density and ultra-wideband parallel transmission application (W3C.5)
15:30 - 15:45
Presenter: Yinping LIU, Shanghai Jiao Tong University
We propose graded-index seven-core fiber optimized for high density and ultra-wideband parallel transmission application. We demonstrated both 1 km-propagation at 850 nm and 12.4 km-propagation at 1310 nm simultaneously at a data rate of 7×10-Gb/s.

Reference-less Method for Computing the Transmission Matrix of a Multimode Fiber (W3C.6)
15:45 - 16:00
Presenter: Moussa N'Gom, University of Michigan - Ann Arbor
A simple imaging system together with complex semidefinite programming is used to generate the transmission matrix of a multimode fiber. The optical design does not contain a reference arm and no interferometric measurements are required. The input signal is modulated in phase to induce strong mode interference at the fiber output.


High Speed Devices for Data Centers (W4D)

56 Gb/s DAC-less and DSP-free PAM-4 Using A Silicon Photonic Dual-drive Michelson Interferometric Modulator (W4D.1)
16:30 - 16:45
Presenter: Rui Li, McGill University
We present a silicon photonic dual-drive Michelson interferometric modulator for DAC-less and DSP-free PAM-4 signal generation. 56 Gb/s PAM-4 transmission over 2 km of SSMF is successfully achieved, with a BER below HD FEC threshold.

106-Gbit/s PAM4 40-km Transmission Using an Avalanche Photodiode With 42-GHz Bandwidth (W4D.2)
16:45 - 17:00
Presenter: Masahiro Nada, NTT Device Technology Laboratories, NTT
106-Gbit/s PAM4 transmission over 40-km single-mode fiber is demonstrated using an avalanche photodiode (APD) with a gap-grading layer for high-speed operation. The APD shows maximum bandwidth of 42GHz with 0.5-A/W responsivity at unity gain.

Monolithic Dual-polarization Silicon Modulator for 180 Gb/s DMT Signal Transmission (W4D.3)
17:00 - 17:15
Presenter: Xinru Wu, The Chinese University of Hong Kong, University of California, Santa Barbara
We present a monolithic dual-polarization modulator based on two silicon Mach-Zehnder modulators and a two-dimensional grating coupler as the dual-polarization output coupler. Data transmission at 180 Gb/s using discrete multi-tone modulation is demonstrated.

100 Gb/s DAC-less and DSP-free Transmitters using GeSi EAMs for Short-Reach Optical Interconnects (W4D.4) - Invited
17:15 - 17:45
Presenter: Jochem Verbist, Ghent University - IMEC, Ghent University - imec
We present single-lane 100-Gb/s NRZ, electrical duobinary and PAM-4 transmitters using silicon photonics GeSi electro-absorption modulators. No DSP, DAC or traveling-wave structures are required, enabling compact and low-power transceivers for data center interconnects.

Assessment of Integrated Ge Franz-Keldysh Modulator for Discrete Multi-Tone Modulation (W4D.5)
17:45 - 18:00
Presenter: Yeyu Tong, The Chinese University of Hong Kong
We measure the second order and third order spurious-free dynamic range (SFDR) of an integrated germanium Franz-Keldysh modulator and assess the performance of the modulator for discrete multi-tone (DMT) modulation without any pre-equalization.

56GHz waveguide Ge/Si avalanche photodiode (W4D.6)
18:00 - 18:15
Presenter: Chingyin Hong, SiFotonics Technologies
We report a waveguide Ge/Si APD with ultra-high 3dB-bandwidths: 56GHz with a 1310nm responsivity of 1.08A/W and 36GHz with a 1310nm responsivity of 6A/W, which, to our knowledge, are the best performance among all reported APD devices.


Data Center Traffic Management (W4I)

Network Traffic Characteristics of Data Centers (W4I.1) - Invited
16:30 - 17:00
Presenter: Theophilus Benson, Duke University
Abstract not provided.

Leveraging Deep Learning to Achieve Efficient Resource Allocation with Traffic Evaluation in Datacenter Optical Networks (W4I.2)
17:00 - 17:15
Presenter: Ao Yu, BUPT
This paper first presents a deep learning-based resource allocation strategy supported by global evaluate factor in intra-datacenter optical networks. Numerical results show the proposed strategy improves traffic prediction accuracy and has superior performance.

A Novel Buffering Design and Performance Evaluation of Optical Flow Switch with Smart Scheduling Algorithms (W4I.3)
17:15 - 17:30
Presenter: Yhi Shiau, TL, Chunghwa Telecom Co., Ltd.
In this paper, buffering design and performance evaluation of OFS with smart scheduling algorithms are proposed. The buffer scheduling methods are used for a hybrid switching module or all-optical switching module on the data center.

Optical Networks Throughput Enhancement via TCP Stop-and-Wait on Hybrid Switches (W4I.4)
17:30 - 17:45
Presenter: Artur Minakhmetov, Telecom ParisTech
We report on possible 50% throughput increase in Optical Packet Switching (OPS) data-center networks by replacing all-optical switches with optical switches with shared electronic buffers further enhanced with TCP Stop-and-Wait algorithms.

Optical Circuit Switching Enabled Reconfigurable HPC Network for Traffic Pattern (W4I.5)
17:45 - 18:00
Presenter: Yu Shang, BUPT
We propose a reconfigurable hybrid network architecture using optical circuit switches for HPC systems, and evaluate the performance of different topologies according to different traffic patterns through high throughput and low latency.

Role of Standards in Web-Scale Datacenters (W4I.6) - Invited
18:00 - 18:30
Presenter: Mark Filer, Microsoft Corp.
Abstract not provided.


Photonic Networks for Data Centers (Th1G)

Microsecond Optical Switching Network of Processor SoCs with Optical I/O (Th1G.1)
08:15 - 08:30
Presenter: Sajjad Moazeni, UC Berkeley
We demonstrate an OCS network with microsecond switching time between processors featuring monolithic ring-resonator-based WDM-compatible optical I/Os. This solution can solve EPS scalability challenge and enable novel architectures for emerging disaggregated and heterogeneous data-centers and HPC.

Automated Calibration of Balanced Control to Optimize Performance of Silicon Photonic Switch Fabrics (Th1G.2)
08:30 - 08:45
Presenter: Yishen Huang, Columbia University
Highly-efficient, fabric-wide calibration of balanced control for optical switch fabrics without built-in power-detectors is first realized with fully-automated implementation. This technique co-optimizes thermo-optic and electro-optic phase elements, correcting phase-error and power-imbalance simultaneously for optimized performance.

The ARPA-E ENLITENED Program - Integrated Photonic Technology for Energy-efficient Data Center Networks (Th1G.3) - Invited
08:45 - 09:15
Presenter: Michael Haney, Advanced Research Projects Agency-Energy
The recently launched ARPA-e ENLITENED program aims to exploit integrated photonic interconnect and switching technologies to provide transformative energy efficiency improvements in future data centers. The program’s motivation, goals, and progress are reviewed.

System-Level Demonstration of a Dynamically Reconfigured Burst-Mode Link Using a Nanosecond Si-Photonic Switch (Th1G.4)
09:15 - 09:30
Presenter: Alex Forencich, IBM TJ Watson Research Center, University of California at San Diego
Using a novel FPGA-based network emulator, microsecond-scale packets with 12.5-20-Gb/s data are generated, routed through a nanosecond Si-photonic switch, and received in a fast-locking burst-mode receiver. Error-free links with <382-ns system-level switching are demonstrated.

O-band Energy-efficient Broadcast-friendly Interconnection Scheme with SiPho Mach-Zehnder Modulator (MZM) & Arrayed Waveguide Grating Router (AWGR) (Th1G.5)
09:30 - 09:45
Presenter: Stelios Pitris, Aristotle University of Thessaloniki, Aristotle University of Thessaloniki
We present an O-band energy-efficient broadcast-friendly optical architecture relying on a silicon photonics broadband MZM and an 8×8 AWGR. Experimental validation is demonstrated at 10Gb/s followed by an energy-saving analysis for the proposed broadcast scheme.

Integrated, scalable and reconfigurable Silicon Photonics based optical switch for colorless, directionless and contentionless operation (Th1G.6)
09:45 - 10:00
Presenter: Stefano Tondini, University of Trento
We demonstrate a BCD8sP electronic-photonic integrated device for low cost, low power, mass–manufacturable optical switching. Our network on-chip has 1000 photonic components driven by dedicated electronic controls. Total insertion loss is -22dB, including input and output coupling, and channel isolation is better than 35dB, in a chip area of 1cm2.


Data Center Interconnect Deployments (Th3F)

Present and future optical technology deployments in Facebook’s terrestrial networks (Th3F.1) - Invited
14:00 - 14:30
Presenter: Gaya Nagarajan, Facebook
Abstract not provided.

Leveraging Predictive Analytics to Achieve Knowledge-Defined Orchestration in a Hybrid Optical/Electrical DC Network: Collaborative Forecasting and Decision Making (Th3F.2)
14:30 - 14:45
Presenter: Wei Lu, Univ of Science and Technology of China
We design and experimentally demonstrate a hybrid optical/electrical DC network that achieves knowledge-defined orchestration with two collaborative machine learning modules.

Service Function-Oriented Topology Aggregation in Multi-Domain Inter-DC Elastic Optical Networks (Th3F.3)
14:45 - 15:00
Presenter: Boyuan Yan, Beijing University of Posts and Telecom
A service function-oriented topology aggregation is proposed, based on which a routing and resource assignment algorithm is designed for service function chain construction in multi-domain optical networks. Simulation results show it can achieve high efficiency.


Optical Switching Sub-systems (Th3H)

4 OAM x 4 WDM Optical Switching Based on an Innovative Integrated Tunable OAM Multiplexer (Th3H.1)
14:00 - 14:15
Presenter: MUHAMMAD MALIK, CNIT - Consorzio Nazionale Interuniversitario per le Telecomunicazioni, Sant' Anna di Pisa
A 4OAMx4WDM switching experiment has been carried out combining an innovative integrated tunable OAM multiplexer based on 4-concentric omega-shaped silicon waveguides and a refractive element-based OAM demultiplexer; operation is demonstrated up to 120Gb/s.

83.33 Tb/s Coherent PDM-8PSK SDM-TDM Spatial Super-channel and High-speed Core-joint Switching System (Th3H.2)
14:15 - 14:30
Presenter: Jose Manuel Delgado Mendinueta, NICT
We experimentally demonstrate a record 83.33 Tb/s switching capacity on a time-division spatial super-channel 2x2 switching node making use of core-joint, ns switching-speed and transparent electro-absorption optical switches.

Large-Scale Optical Circuit Switch Architecture for Intra-Datacenter Networking (Th3H.3) - Invited
14:30 - 15:00
Presenter: Yojiro Mori, Nagoya University
This paper reviews recently developed large-scale optical-circuit-switch architectures suitable for intra-datacenter networking that synergistically combine space switches and wavelength-routing switches. Tunable laser and tunable filter based wavelength-routing schemes are compared in terms of hardware requirements.

T/O-band Wavelength Routing System Using Quantum Dot Semiconductor Devices and 1081-Channel AWG Router (Th3H.4)
15:00 - 15:15
Presenter: Ryogo Kubo, Keio University
We demonstrate a wavelength routing system that covers a broad wavelength range of 1000–1360 nm, i.e., T/O-band. The system includes our developed T/O-band-specific quantum dot semiconductor devices and 1081-channel arrayed waveguide grating (AWG) router.

Next-Generation ROADM Employing Bandwidth-Adaptive Silicon-Photonic Filters for Flexible Drop Operation (Th3H.5)
15:15 - 15:30
Presenter: Yojiro Mori, Nagoya University
As one step in realizing next-generation flexible ROADMs, we demonstrate the effectiveness of a bandwidth-adaptable silicon-photonic filter, through transmission experiments on 10-Gbps OOK, 40-Gbps DQPSK, 100-Gbps DP-QPSK, 400-Gbps 2-subchannel DP-16QAM, and 1-Tbps 5-subchannel DP-16QAM signals.

Experimental Utilization of Repeated Spatial-Mode Shifting for Achieving Discrete Delays in a Free-Space Recirculating Loop (Th3H.6)
15:30 - 15:45
Presenter: Ahmed Almaiman, University of Southern California
We demonstrate an all-optical free-space recirculating delay loop by shifting the spatial mode order using the orbital-angular momentum (OAM) basis. The orthogonality of the OAM modes is used to easily select the desirable delay at the loop output.


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