ECOC 2016 Workshops - Sunday September 18, 13:30-18:00 h 



Room 18+19

Progress and Challenges in MIMO Signal Processing and Channel Modelling for Space Division Multiplexed Transmission systems


Benn Thomsen (UCL, UK)


To date the most impressive single fibre capacity results have utilised Space Division multiplexing either within multiple cores or within a single multimode core or combination thereof. In the 12 years since the Mode Division Multiplexing (MDM) flavour of Space Division Multiplexing (SDM) for coherent systems was first proposed and demonstrated by Hsu et al. we have come a considerable way. From Hsu’s First demonstration of 2x2 MIMO at 100Mbit/s per channel over 100m of 62.5um multimode fibre, to the most recently demonstrated 30x30 MIMO at 60Gbit/s per channel over 23 km of specially designed Few Mode Fibre by Fontaine, et al. These impressive results have all used offline MIMO processing to demonstrate the potential capacity of such systems, the challenge now is to develop real-time signal processing technology to show that such systems can outperform conventional single mode fibre approaches and make this a compelling technology to deploy.

This workshop aims to present the state of the art in both receiver and transmitter based signal processing for spatially multiplexed systems, and in channel design/modelling of multimode fibre systems. In particular it will aim to:

  • Provide a summary of the state of the art in both fibre design, amplification and signal processing.
  • Identify where the key implementation challenges lie.
  • Explore solutions to these challenges.

A key question in the design of MDM systems is whether to engineer the channel to minimise or maximise the modal mixing and the implications that this is likely to have on system performance and the MIMO DSP complexity. This workshop will present views from both sides of this design choice.


Approaches to DSP free MDM

  • Optical MIMO Processing (in Modal Basis) for Direct-Detection MDM
    Karthik Choutagunta, Stanford, USA.
  • Elliptical core fibres MDM without DSP
    Ezra Ip, NEC, USA
  • OAM fibres for DSP free MDM
    Siddharth Ramachandran

Channel Modelling and Implementation

  • Multimode fibre channel modelling in the linear and nonlinear regime
    Georg Rademacher, TU Berlin, Germany.
  • Multimode optical amplification performance and implications for channel equalisation
    Yongmin Jung, Optoelectronics Research Center, University of Southamption, UK.


  • The challenges of Mode division multiplexed transmission with 30+ modes
    Nick Fontaine, Nokia Bell Labs, USA.
  • Optimising MIMO-DSP for different crosstalk and distance regimes
    Kai Shi, UCL, UK.
  • Taking MIMO-DSP from offline to online implementation
    Sebastian Randel, Karlsruhe Institute of Technology, Germany




Room  17

Exploring the real value of flexible optical networks 


Dimitrios Apostolopoulos (National Technical University of Athens, Greece), Camille Delezoide (Nokia, France) 


The world’s insatiable demand for bandwidth is stretching physical layer capacity; it is only a matter of years before we are faced with throughputs that are beyond the reach of current static optical networks. Moreover, the changing nature of traffic toward more volatile patterns renders the conventional approach of over-provisioning of resources increasingly inefficient. Operators are finding that room for economically viable growth is shrinking. Flexible optical networks are being touted as a means of avoiding the capacity crunch and increasing costefficiency, through the introduction of adaptability in modulation format and elasticity in spectrum utilization, by dropping the fixed grid and allowing dynamic adjustment of throughput and wavelength allocation.
Realizing flexible networks will require a combination of disruptive and cross-layer innovations. In addition to multi-rate, multi-format, malleable-spectrum optical components, also needed are the tools to enable programmability and dynamic operation: Spectrally-efficient modulation formats, novel DSP for linear and nonlinear impairment monitoring and mitigation, enhanced transmission and link-engineering approaches which take physical impairments into consideration, as well as innovative dynamic control plane schemes.
Despite the promises, the challenge remains to precisely quantify the benefit -if any- of flexible deployments. For it to be a worthwhile investment that will encourage market uptake, the additional functionality must ultimately benefit an operator’s bottom line, versus static-operation alternatives.
This workshop aims to highlight the latest developments in flexible optical network design, control and operation, focusing on the impact of novel subsystems leveraging coherent technology and software-defined operation. The challenges of design and real-world implementation will be critically explored, and approached from all facets and all layers.
The workshop will include a moderated panel discussion on what it will take to consolidate these emerging technologies into viable, commercial systems, attempting to gauge potential benefits, as well as costs, for telecom operators.


1st Session

  • Flexible optical networks: Latest concepts and developments
    Lena Wosinska (KTH – SE)
  • Programmable, multi-rate optical transmission systems enabling flexible optical networks
    Antonio Tartaglia (Ericsson Telecomunicazioni - IT)
  • Advances in DSP-based optical performance monitoring
    Maxim Kuschnerov (Coriant - DE)
  • Quality of Transmission (QoT) modelling and monitoring
    Andrea Carena (PoliTo - IT)
  • Multiflow transponders for elastic networks
    Christos Kouloumentas (NTUA - GR)
  • Panel Discussion (~20 mins) 

2nd Session

  • Network and hardware virtualization towards a smart photonic cloud
    Reza Nejabati bati (University of Bristol – UK)
  • The role of elasticity in the future network
    Kevin Sparks (Nokia - US)
  • Techno-economic analysis of flexible optical network deployment
    David Boertjes (Ciena – US)
  • Reaping the benefits of flexibility – A telecom operator’s perspective
    Matthias Gunkel (DT - DE)
  • What “flexible” features do we need in optical networks, and why?
    Gaya Nagarajan - Giuseppe Rizzelli (Facebook - UK)
  • Panel Discussion (~20 mins)




Room 16

Short range optical transmission for emerging 5G fronthaul, DCI and Metro Networks


Gordon Ning Liu (Huawei Technologies, China)
Volker Jungnickel (HHI, Germany)


With the rapidly increasing data traffic in 5G mobile fronthaul, data center interconnect (DCI), and metro networks, the growing bandwidth demand from high speed short range optical transmission will be much more than that from the long-haul optical transmission. Especially, when using conventional digital transmission such as CPRI in CRAN architecture, 5G performance targets would imply a severe capacity crunch. Besides, there are tremendous amounts of optical equipments in short range optical transmission systems compared with the long-haul transmission systems and thus will induce large cost and huge energy consumption. Therefore, the power and cost efficiency should be key considerations for short range optical transmission besides the transmission performance. The workshop aims to bring together internationally recognized experts from network operators, equipment/component vendors and academia in order to provide a comprehensive overview of this important field for next-generation short range optical transmission. Some demands, transmission schemes and optical components technologies which can be shared by 5G fronthaul, DCI and metro networks will be discussed in the first session. Then in the second session, the workshop will be focused on several new concepts, e.g. the Next Generation Fronthaul Interface (NGFI) based on Analog or Ethernet technologies and using a new functional split between BBU and RRH.


Pluggable DWDM: Considerations For Campus and Metro DCI Applications
Xiang Zhou (Google, USA)

Emerging Technologies for Metro Optical Networking
Xiang Liu (Huawei, USA)

Photonic Integration for Applications from Datacenter to DWDM
Steven Wallace (Lumentum, Canada)

Transmission schemes for future short reach systems
Chao LU (Hong Kong Polytechnic University, Hong Kong)

Advanced modulation formats for 5G fronthaul WDM-PON systems
Annika Dochhan (ADVA, Germany)

The required Fixed Access Network evolutions in order to be ready for 5G
Philippe Chanclou (Orange, France)

Making fronthaul efficient without killing it
Frank Effenberger (Huawei, USA)

Converged, Ethernet-based next generation fronthaul
Nathan Gomes (University of Kent, UK)

Thomas Pfeiffer (Nokia Bell labs, Germany)


Room 15

Fiber and waveguide based devices for 2 micron, is there the need ? 


Camille Brés (EPFL, Switzerland)
Periklis Petropoulos (ORC, UK)


The workshop will put forward a discussion on the recent and rapid development of fiber/waveguide based sources and devices for the short wave infrared (2 micron), and will debate whether there is a real need for this technology, especially in the context of telecommunications. Amongst others, we are seeing the emergence of fiberized components, off the shelf sources, high speed modulators, directly modulated sources as well as demonstrations of 2 micron communications in hollow core fibers. Is there a real potential or is it simply interesting physics? What components/technological developments/improvements would be needed to make the technology an implemented reality?

Discussion on non-telecom applications will also be welcome, e.g. on the development and potential of fiber-based supercontinuum sources/combs and, Mid-IR oscillators. While many great and interesting experimental demonstrations have been done, are there the required applications and are fiber/waveguide approaches competitive?

This workshop aims to present the enabling technologies by exploring their strengths, weaknesses and level of maturity, as well as to explore applications and challenges that these technologies can address.


Optical Components for enabling 2um applications
Gary Stevens, Gooch and Housego, UK

Semiconductor laser diodes and applications in the 2um wavelength region
Brian Kelly, Eblana Photonics UK

Rare-earth doped fibre amplifiers in the 2um waveband: challenges and opportunities
Shaif-Ul Alam, Optical Research Center Southampton UK

II-V-on-silicon photonic integrated circuits for the 2um wavelength range
Gunther Roelkens, University of Gent, Belgium

Photonic chip–based optical frequency comb for the 2 micron band
Michael Geiselmann, Ecole Polytechnique Fédérale de Lausanne, Switzerland

Thulium doped fiber femtosecond laser: markets and applications
Nicolas Ducros, Novae, France

Can the 2 micron window solve the capacity crunch?
Noise MacSuibhne, Aston University, UK



Room 110

Next Generation Ultra-Broadband Silicon Photonics Based Integrated Circuits


Guanghua  Duan (III-V Lab - Joint lab of Nokia, France)
Abderrahim Ramdane(CNRS, France)
Johann Peter Reithmaier (University Kassel, Germany)
Jeremy Witzens (RWTH Aachen University, Germany)


Increasing front panel data densities of data center switches as well as increasing reach and data rate of data center state-of-the-art optical interconnects has motivated the emergence of Silicon Photonics based integrated circuits. In parallel, metro and longhaul networks require transceivers with reduced size and power consumption. Silicon photonics is also a candidate for these markets. This Workshop will gather prominent speakers from industry and academia and intends to give an update on the state of the art on Silicon Photonics based integrated circuits, with emphasis on the following two key areas:

  • Integration of efficient laser source solutions for silicon photonics with advanced material systems such as quantum dots.
  • Silicon based Photonic Integrated Circuits implementing broadband wavelength division multiplexing.


This workshop is organized in the framework of the EU funded projects BIG PIPES “Broadband Integrated and Green Photonic Interconnects for High Performance Computing and Enterprise Systems” and SEQUOIA “Energy efficient Silicon emitter using heterogeneous integration of III-V quantum dot and quantum dash materials”.
World-wide leading experts will be invited to give talks. The talks, complemented by BIG PIPES and SEQUOIA presentations, will be followed by a Q&A session involving a panel of all the Speakers.


13:30 Introduction
Guang-Hua Duan, III-V Lab, France, Abderrahim Ramdane, CNRS, France

Session 1: Light Sources on Silicon and Comb Laser Based Transceivers
Chair Guang-Hua Duan, III-V Lab, France

13:45 Advances on efficient light sources on silicon
John Bowers, UCSB, USA

14:00 Efficient quantum dot based light sources for silicon photonics
Johann Peter Reithmaier, Univ. Kassel, Germany

14:15 Advances on heterogeneous integration of III-V on silicon
Segolene Olivier, CEA LETI, France

14:30 High capacity silicon photonics based transceivers
Young-Kai Chen, Bell-Labs, Nokia, USA

14:45 Silicon photonics based high capacity transceivers with hybridly integrated quantum dot lasers
Yasuhiko Arakawa, Univ. Tokyo, Japan

15:00 First panel discussion

15:30 Coffee break

Session 2: High Capacity silicon photonics based Transceivers and Super-Channel Architectures
Chair Abderrahim Ramdane, CNRS, France

16:00 Comb based Silicon Photonics transmitters for short reach interconnects
Jeremy Witzens, RWTH Aachen, Germany

16:15 Highly spectrally efficient optical links
Liam Barry, Dublin City University, Ireland

16:30 Scaling datacenter optical interconnects
Elad Mentovich, Mellanox Technologies, Israel

16:45 Super-channel optical interconnects for datacenters
Jörg-Peter Elbers, ADVA, Germany

17:00 Silicon photonics based coherent transceivers
Dr. Christopher Doerr, Acacia Communications, USA

17:15 Second panel discussion



Room 112

Extending reach in long-haul WDM systems: What can be achieved with nonlinear mitigation techniques in fully loaded WDM transmission?


Giancarlo Gavioli (Nokia Micro-Electronics Labs, Italy)
David Millar (Mitsubishi Electric Research Laboratories, USA)
Robert Killey (University College London, UK)


Digital coherent technology has enabled compensation of linear fiber impairments and the introduction advanced error-correction coding in optical transmission systems. Fiber nonlinearity has thus become the dominant obstacle towards achieving the ultimate capacity in optical transmission systems.

Over the recent years, different techniques have been proposed to mitigate for nonlinearities by means of digital and optical signal processing and demonstrated to be effective toward intra-channel nonlinear distortion. This includes both digital and optical techniques for nonlinear channel inversion, or optimization of transmission parameters such as symbol rate and symbol distribution to enable nonlinear tolerant transmission. Digital integrated technology is now expected to be mature enough to enable the implementation of such complex algorithms.

However, recent advancements in fiber propagation modeling have quantified and demonstrated that inter-channel nonlinearities become the dominant effect in fully loaded WDM transmission systems with implication on the effectiveness of intra-channel nonlinear mitigation.

This workshop intends to provide a forum of debate on the effectiveness of nonlinear mitigation techniques in fully loaded WDM transmission and to offer a comparative overview in terms of performance gain and technology complexity of the different solutions for digital and optical nonlinear mitigation in the contest of long-haul dense WDM transmission systems.

1) This workshop intends to provide a forum of debate on the effectiveness of nonlinear mitigation techniques in fully loaded long-haul WDM transmission systems.
2) Provide a comparative overview in terms of performance gain and technology complexity of the different solutions for digital and optical nonlinear mitigation.
3) Address the complexity-cost and maturity of digital integrated technology for implementation of nonlinear mitigation algorithms.
4) Provide a theoretical review of the dominant nonlinearities and quantify the impact of intra-channel and inter-channel distortion in the contest of fully loaded WDM transmission Systems.


1st Session

  • How much should we expect to gain from nonlinear mitigation?
    Ronen Dar (Nokia Bell Labs, Holmdel, USA)
  • Overview of Nonlinearity Mitigation Techniques
    Rene-Jean Essiambre (Nokia Bell Labs, Holmdel, USA)
  • Implementation considerations of digital-domain nonlinear compensation in commercial systems
    Qunbi Zhuge (Ciena, Ottawa, Canada)
  • Digital Nonlinear Compensation for 400G Transceiver with Higher Order Modulation
    Zhenning Tao (Fujitsu Labs, Beijing, China)
  • Nonlinearity compensation benefits in experiments over transoceanic distances using offline processing
    Alexei Pilipetskii (TE Subcom, Eatontown, USA)
  • Commercial use cases of fiber nonlinearity compensation
    Danish Rafique (ADVA, Germany)
  • NLC in Operator Networks - What can it add?
    Carsten Behrens (Deutsche Telekom, Germany)

2nd Session

  • Non-Linearity Mitigation by Multi-Subcarrier Transmission and Joint DSP Post-Processing
    Pierluigi Poggiolini (Politecnico di Torino, Italy)
  • Better Compensation with Optical Phase Conjugation?
    Andrew Ellis (Aston University, Birmingham, UK)
  • Nonlinear signal noise interaction in fully loaded systems
    Paolo Serena (Università di Parma, Italy)
  • Inter-channel nonlinear mitigation: what can be (reasonably) done through DSP?
    Marco Secondini (Scuola Superiore Sant’Anna, Pisa, Italy)
  • Performance of nonlinearity tolerant constellations in fully loaded WDM systems
    John Cartledge (Queen's University, Kingston, Canada)
  • PMD and wideband nonlinearity compensation: next bottleneck or fundamental limitation?
    Gabriele Liga, (University College London, UK)



Organized by
ITG - Informationstechnische Gesellschaft im VDE
VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V.
Eurel Partner ECOC
ECOC 2016 Sponsor NOKIA
Gold Sponsor
Telekom Gold Sponsor ECOC 2016
ECOC 2016 Mediapartner Fibresystems
Mediapartner EPIC
ECOC 2016 Mediapartner bayernphotonics
ECOC 2016 Optical Connections
Impressum | © 2010 VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V.