Symposium on FTTH Technologies: Components, Systems, and Smart Design
Organised at the FTTH Conference 2010 by EPIC
Participants can download the presentations here with the username and password they received. The presentations can be found after the name of the speaker. When it states N.A. either no slides were used or we have no permission to disclose them.
Please scroll down to view the programme and download the presentations.
The growth of the FTTH business depends on several factors, of which FTTH access technologies are an important element. While the ultimate result of deployment of FTTH almost everywhere in Europe is no longer in doubt, developing FTTH technologies will play a big part in the timing. In a business environment, timing is everything. Growth in FTTH deployment will require more complex network architectures in order to distribute ever higher bandwidth content to subscribers. Here you can learn about what those architectures will look like, what kind of data rates will be transmitted and the components you will need to work with in a few years’ time. Growth in FTTH deployment will enable new applications, such as data centres. These mass data storage centres, made famous by Google, may become an important part of many business operations. This year’s symposium will present the latest outlook for developing FTTH technologies: fibre-optic components for FTTH, design of FTTH networks, taking into consideration emission of Greenhouse Gases, and applications that need FTTH connections to prosper.
Download a PDF version of the EPIC Symposium Programme here.
European Photonics Industry Consortium Thomas Pearsall
17, rue Hamelin General Secretary
75016 Paris, France Phone +33 1 45 05 72 63
|24 February 2010 Day 1|
Session 1: FTTH Network Technologies
- 14:30-14:55 Dr. Jörg-Peter Elbers, VP Advanced Technology, ADVA AG Optical Networking
“WDM-PON Technologies for FTTH Access”
- 14:55-15:20 Curt Badstieber, Project Leader, Nokia Siemens Networks
“Ultra-dense Access Network Architecture Serving >1000 Clients, Including Coherent Technologies”
- 15:20-15:45 Dr. Gerlas Van Den Hoven, CEO, Genexis
“10 G PON and Point-to-Point PON”
|Speakers:||Dr. Jörg-Peter Elbers|
Dr. Jörg-Peter Elbers
Biography & Abstract
Biography: Dr. Jörg-Peter Elbers received the diploma and the Dr.-Ing. degree in electrical engineering from Dortmund University, Germany, in 1996 and 2000, respectively.
From 1999-2001 he was with Siemens AG – Optical Networks, last as Director of Network Architecture in the Advanced Technology Department. In 2001 he joined Marconi Communications (now Ericsson) as Director of Technology in the Optical Product Unit. Since September 2007 he is with ADVA AG Optical Networking, where he is currently Vice President Advanced Technology in the CTO office and responsible for Technology Strategy and Innovation Projects.
Abstract: This presentation discusses WDM technologies as basis for next-generation optical access networks. It describes drivers and requirements. Challenges as well as possible solutions are outlined.
Biography & Abstract
Biography: Curt Badstieber is currently Project Leader in the Next Generation Optical Access (NGOA) group formed by NSN in October 2008. His main tasks are, amongst others, customer relationship management, keeping an eye on standardization as well as feature management in view of real life deployment scenarios of Optical Access Systems being specified and engineered at NSN.
Curt Badstieber was previously responsible for the product and feature management of the Next Generation Hybrid-PON system, a mixed architecture of 10G-PON and WDM transport, formerly under study in NSN. Prior to this he worked predominantly as Key Account & Country Manager for Fixed Networks in the United Arab Emirates, to an extent also responsible for Sales of IPTV solutions, EWSD (Voice) as well as Data Solutions in the GCC states. He was part of the original network architecture team to envision, draft, define and implement the very first all IP based communication network in the middle east at Dubai Internet City.
Curt Badstieber has 14 years of experience in telecommunications in various positions.
He joined Siemens AG in 1995 after completing his bachelors degree in communication engineering in Plymouth / UK. Throughout his career with NSN / Siemens, he focused primarily on fixed telecommunications networks and equipment, initially TDM voice switching, SDH and ATM networks and more recently in soft switch architectures, IP routing aspects, fixed mobile convergence / IMS in the core as well as PON in the access. He was instrumentally involved in some of the key fixed network deployments of NSN in the greater Middle East arena. He has switched several times between International Sales and Technical sales orientated jobs.
Abstract: The access data rate is foreseen to continue its exponential growth for the next years. A ten-fold increase of the user-available access data rate has been observed every three to five years for the last two decades. Optical fibre is the only medium which can satisfy this future demand. Any terminal equipment (ONU) of the fibre access network will also need to undergo an evolution over time to keep pace with this need.
This presentation focuses on NGOA (Next Generation Optical Access), a NSN proposed PON design currently in Research and Development, based on a coherent heterodyne resceiver design enabling ultra dense lambda spacing and avoiding some of the disadvantages of conventional WDM and TDM PON systems. The precise wavelength selectivity and high sensitivity of these receivers enables a completely filterless WDM design with long reach, high split rates and simplified logistics, promising an affordable 1Gbit/s sustained datarate for all users.
The presentation will highlight the basic system building blocks and briefly describe the network architecture implications in practical field case examples, considering factors such as outside plant, open lambda optical unbundling, central and local office consolidation, coexistance as well as migration from other existing pon systems.
|Dr. Gerlas van den Hoven|
Dr. Gerlas van den Hoven
Biography & Abstract
Biography: Gerlas van den Hoven started his career at Philips Research in the area of components for long haul and metro networks. He worked as product line manager for optical amplification at JDS Uniphase, where he became part of the JDSU Netherlands management team. After JDSU, Gerlas worked for Genoa Corporation as VP Products. Here, he developed the market for low-cost integrated optical amplifiers for the metro-access market. In 2002, Gerlas co-founded Genexis, a company focused on the development of home gateways for fiber-to-the-home. He is currently CEO of Genexis. Gerlas van den Hoven holds a PhD on the subject of silicon-based photonic materials.
Abstract: After the first FTTH projects in Europe have now reached maturity, operators are preparing for the next step in large-scale roll-out of fiber to the home. It is clear that Gigabit per second bandwidth will be a requirement in the near-future in order to beat the competition from cable networks and to offer new compelling services to increase average revenue per user. To realize Gigabit to the home, several technologies are available ranging from shared 10G PON networks to dedicated 1G Ethernet networks. Clearly, each approach has its own technical merits and issues, which will be discussed in regards to the European FTTH initiatives. At the same time, Gigabit networks offer such a high bandwidth that the actual amount of bandwidth becomes irrelevant, and other factors come into play, such as network openness, security, and compatibility with next generation services. The role of the network equipment - central office and home gateway - will be key in enabling next generation services and taking full benefit of the Gigabit capacity.
Session 2: FTTH Network Technologies
- 16:30-16:55 Dr. Michael Robertson, VP Research Programmes, CIP Technologies
“Energy Conservation Strategies for the FTTH Network”
- 16:55-17:10 Dr. Roland Wessäly, Managing Director, Atesio (Sebastian Orlowski, Axel Werner, Atesio, and Maren Maartens, Zuse Institute Berlin)
“Cost Optimal Design of FTTx Networks”
- 17:10-17:25 Dr. André Richter, Director Product Management - VPIPhotonics, VPISystems
“FTTX-PLAN – Planning the Upgrade of Today's Passive Optical Networks”
- 17:25-17:40 Rosie Cush, Senior Research Scientist, Oclaro
“Low Cost Tuneable Lasers for High Performance, Flexible Access Networks”
|Speakers:||Dr. Michael Robertson|
Dr. Michael Robertson
Biography & Abstract
Biography: Michael Robertson has over 20 years experience in photonic devices for telecommunications. Following a PhD at Durham on cadmium sulphide solar cells, he joined BT Labs working on laser reliability for optical telecommunications. After this, he led a team that developed a high reliability planar PIN photodiode for submarine optical communications and he successfully transferred this to manufacturing at BT&D (later part of Agilent). During this time, he was part of the team at BT that won the Queen’s Award for Technology in 1993 for its work on optoelectronic materials and devices. Since then he has managed research on components for optical fibre systems including expanded mode lasers, semiconductor optical amplifiers, electroabsorption modulators and optical switches. He is currently VP Research Programmes within CIP Technologies.
Abstract: The advent of FTTH networks offers an excellent opportunity to reduce carbon emissions through reduced business travel for example, through the use of videoconferencing and greater home working. However, this can only be effective if FTTH networks are energy efficient. Telecommunication networks are currently using increasing proportions of national energy consumption. In this talk, issues of energy usage in FTTH networks will be discussed. The relative usage of the different approaches will be described and comparisons made between different options.
|Dr. Roland Wessäly|
Dr. Roland Wessäly
Biography & Abstract
Biography: Dr. Roland Wessäly is managing director of the atesio GmbH, Berlin, Germany. atesio develops software components and offers services for planning, configuring, and optimizing telecommunication networks. He is responsible for fixed network planning. For his distinguished work on developing methods to design cost optimal survivable networks he received the Vodafone Innovations Award 2001.
Abstract: The Berlin-based research consortium fttx-plan (atesio GmbH, Heinrich-Hertz Institute, VPIsystems GmbH, Zuse Institute Berlin) aims at developing tools and methods for planning future FTTx networks. The consortium oﬀers a unique combination of photonics modeling, technical expertise, network planning, and mathematical optimization know-how.
The central goal of the project is to support the strategic decision process of city carriers and new local operators by performing an objective, quantitative analysis that considers varying boundary conditions.
We will present methods and tools developed by the fttx-plan consortium in order to reduce planning uncertainties, to support a realistic forecast of costs, and to detect potential technological dead-ends early in the design process. Custom-built mathematical optimization methods build the core for our planning tool. We show how this approach can support city carriers and new local operators in answering fundamental design decisions such as:
• What are the key decisions for the business case?
• How to design an FTTx network which is both cost-eﬃcient and easily extendible to new technologies without touching the passive infrastructure later?
• What are the dependencies between total cost of ownership and the technical possibilities of the available system technologies?
• What is the cost diﬀerence between G-PON and P2P-Ethernet solutions in a particular town or district?
• Under which conditions is it possible to oﬀer protection against equipment failures or cable cuts to valuable customers at little additional cost?
A sound modeling of all planning ingredients is fundamental to automatically optimize FTTx networks using state-of-the-art mathematics. We present a detailed model of street, railway, and sewer networks, an existing duct and cable infrastructure, the installable passive and active components, the private and business customers to be served, CAPEX and OPEX cost incurred during the life-time of an FTTx network, and various other constraints which would be hard to take into account in a manual planning process.
Based on this model we will show how abstraction combined with methods from mixed-integer linear programming can successfully be used to automatically compute cost-optimized FTTx networks. As a highlight we will present results from techno-economic studies using this unique approach.
|Dr. André Richter|
Dr. André Richter
Biography & Abstract
Biography: André Richter completed his Masters degree in Electrical Engineering with honors at Georgia Institute of Technology, Atlanta USA, in 1995. In 1998 he worked as visiting research fellow at the University of Maryland Baltimore County, USA where he performed studies on modeling of timing jitter in long haul RZ WDM systems. In 2002 he received a Doctorate degree from Technical University of Berlin, Germany, for a novel work in modeling long haul fiber optical communications.
Since Dr. Richter joined VPIsystems in 1997, he contributed to the development and management of various modeling tools for optical components, subsystems and systems. He invoked an industry training and consulting program in Photonic Design Automation (PDA) that has served more than 900 engineers worldwide. Dr. Richter authored or co-authored more than 40 publications and has given several invited presentations on different topics of modeling and designing optical communication systems.
Dr. Richter works currently as Director Product Management - VPIphotonics (VPIsystems’ division specializing on Optical Engineering Solutions), and as Managing Director of VPIsystems GmbH, being responsible for VPIsystems' European operations. He is senior member of IEEE, and member of VDE and OSA.
Abstract: Planning future access networks requires not only the optimization of capital and operational expenditures for the network infrastructure, but also the assessment of the upgradeability of the network. Since fiber infrastructures represent an investment over several decades, it should be ensured that deployed systems can easily be upgraded with existing or upcoming technologies in order to meet future requirements in terms of reach, services, total capacity and available bandwidth per user.
After a short review of trends in PON technologies and activities related to the upgrade of current PON systems, we investigate a typical migration scenario for deployed GPON/EPON systems with respect to
•Extendibility: Increase the reach or/and the number of users without changing the hardware at the OLT and ONUs.
•Interoperability: Offer soon-to-be-standardized solutions without removing current services.
•Scalability: Increase the bandwidth per user using current or future technologies.
Using numerical simulations, we illustrate and quantify physical limitations related to this migration scenario. We demonstrate limitations in the upgrade process and identify possible solutions to enable a simple and low-cost update of current PON systems. The findings of our investigations on migration scenarios can be incorporated to the network planning process, and thus, influence the decision on network optimization results.
Our activities are performed in frame of FTTX-PLAN – a research project and Berlin-based consortium aiming to develop tools and methods for planning future FTTx networks by combining photonics modeling and design expertise with network planning and optimization know-how.
Biography & Abstract
Biography: Rosemary Cush has over 25 years of experience in photonics, having joined the Oclaro Caswell research and manufacturing facility in 1984 after graduating from Oxford University. She has extensive experience in optical network design and component development, and has participated in a number of UK and European collaborative programmes, covering both WDM and coherent technologies. She is currently working within the Oclaro CTO office as part of the Actives R&D team.
Abstract: Tuneable lasers offer maximum performance and flexibility for access networks but are perceived to be a high cost technology. However, developments in the design and operation of the DSDBR tuneable laser demonstrating athermal operation and remote wavelength control offer the prospect of a low cost tuneable product based on a proven high yielding manufacturing process. Devices of this type enable flexible access networks capable of evolution to higher data rates, longer reach and ultra-dense channel spacing.
|25 February 2010 Day 2|
Session 3: Component Technologies for FTTH
- 9:30-9:55 Christophe Kazmierski, Project Leader, Alcatel-Thales III-V Lab
“Remote Amplified Modulators: Key Components for 10Gb/s WDM PON”
- 9:55-10:20 Prof. Xing-Zhi Qiu, Project Manager, IMEC/University of Gent
“10Gb/s Burst Mode Receivers”
- 10:20-10:35 Dr. Norbert Grote, Deputy Dept. Head, and Norbert Keil, Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut
“Polymer Based Integration Platform for Access Components”
- 10:35-10:55 Dr. Jonathan Schrauwen, Caliopa
“Silicon Photonics Multichannel Transceivers Enable 100+ Channel Point-to-Point FTTH Central Office Linecards”
Biography & Abstract
Biography: Christophe Kazmierski contributed in pioneer works on long-wavelength lasers by MOCVD with LCR-Thomson in early eighties. He headed the Laser Department of France Telecom R&D engaged on laser-based photonic circuits. His research focuses now on 40-400Gbit/s electro-absorption modulator based sources with Alcatel-Thales III-V Lab. He is an author of over 250 papers and 16 patents in III-V semiconductor area. He was a member of Program Committees of the International Semiconductor Laser and the Microwave Photonics Conferences. He has been involved in a dozen of cooperative international ESPRIT263, RACE I, RACE II, EUREKA, IST and national RNRT and ANR programs.
Abstract: While single section RSOA devices are showing qualifying performance for applications in WDM PON working up to symmetrical 2.5Gb/s, a new reflective component class integrating low-chirp and large-bandwidth Electro-Absorption Modulators with SOA are progressively taking over as a realistic solution for the symmetrical 10 Gb/s. This is due to their ability to work over indoor temperature range while remaining simple enough for lowest cost TO-CAN package standards. Additional multi-function capabilities open a way for very simple all-monolithic duplexers in a single low-cost receptacle. Still, 10 Gb/s remote modulators must demonstrate improved power budget to qualify for the New Generation Access.
|Prof. Xing-Zhi Qiu|
Prof. Xing-Zhi Qiu
Biography & Abstract
Biography: Prof. Dr. Xing-Zhi Qiu started research work at the Dept. of Information Technology (INTEC) of Ghent University, Belgium in 1986. She received a Ph.D in electronics engineering with highest distinction from Ghent University in 1993. And she is currently a project manager within the INTEC department of Interuniversity MicroElectronics Center (IMEC), as well as a part time professor of Ghent University.
Within INTEC, she gained 23 years of R&D experience in the field of advanced broadband telecommunication systems and optical access networks in general, concentrating on the development of the high bit rate physical layer of upstream PON links and their burst-mode opto-electronic sub-systems in particular. She was and is strongly involved in the EU-funded projects such as ACTS projects PLANET and PELICAN, FP6 IST projects GIANT and PIEMAN, as well as FP7 ICT projects MARISE and EuroFOS. She coordinates high speed, analog/digital chip design and sub-system development within the INTEC_design laboratory including the realization of the first 1.25 Gbit/s GPON burst-mode chip set (in 2004) and the GPON lab demonstrator (in 2005) and conducting research on challenging 10Gb/s burst mode chip set (in 2008) and 10Gb/s upstream link integration (in 2009). She co-authored more than 110 publications in the field of telecom equipment, broadband access networks and mixed-mode chip development, and 5 patents on communications.
Abstract: Worldwide, passive optical networks (PONs) are a massively deployed fibre access technology, and a cost-effective optical solution to deliver high capacity services to end users for HDTV, IPTV, VOD, and digital home. Future PONs are evolving towards 10Gb/s symmetric operation, where 10Gb/s burst-mode receiver (BM-Rx) and burst-mode clock and data recovery (BM-CDR) circuits located at the optical line termination (OLT) are key physical medium dependent (PMD) components.
This presentation will give an overview of 10Gb/s BM-Rx developments, and their design challenges associated with high performance TDMA PONs. Different configurations of 10Gb/s BM-Rx prototypes for IEEE 10G-EPON and potential ITU-T FSAN 10G-PON2 will be compared. A 10Gb/s ultra high capacity hybrid WDM / TDMA physical layer for high split long-reach PONs will be also introduced.
Finally, recent research of 10Gb/s APD-based BM-Rx supporting shorter burst overhead will be discussed. This newly designed BM-Rx will meet the future capacity need with improved performance, taking efficient network transmission, good interoperability and reliable operation into account.
|Dr. Norbert Grote|
Dr. Norbert Grote
Biography & Abstract
Biography: Dr. Norbert Grote earned the Diploma and Ph.D. degree in physics from Aachen Technical University, Germany, in 1974 and1977, respectively. In 1981 he joined the Heinrich-Hertz Institut für Nachrichtentechnik GmbH to help build up the newly established Integrated Optics Dept, which later became the Photonics Components Dept. when the HHI became a member of the Fraunhofer Society in 2003. Since then he is acting as deputy head of this department currently comprising some 70 employees. He is supervising different R&D groups focussing on InP materials technology, laser devices, and monolithic and hybrid integration technology, in the latter case using a PLC polymer platform. Over the years he has extensively been involved in the initiation and coordination of photonics related national R&D programmes/projects in the public domain and of collaborative projects with companies.He has been engaged in several EU funded projects, including the FP6 project MEPHISTO as coordinator and the currently running FP7 IP EuroPIC. He has been author/co-author of more than 80 publications in the optoelectronics and photonics arena, and has been co-editor of the book "Fiber Optic Communication Devices" (2001).
Abstract: The presentation addresses:
- polymer based PLC technology
- implementation of passive optical functions (filters; polarisation splitter; reflectors) by means of integrated thin film elements
- passive pick-and-place fiber attachment
- integration of photodiodes (up to 25 Gb/s capability)
- integration of single-mode laser diodes
- examples of integrated components for use in access networks
|Dr. Jonathan Schrauwen|
Dr. Jonathan Schrauwen
Biography & Abstract
Biography: Jonathan Schrauwen received his MSc degree in Applied Physics from Ghent University in 2004, after a thesis in the Institut Laue Langevin in Grenoble, France. Then he started working in the group of Roel Baets, at Ghent University/IMEC, where he got his PhD degree in Photonics in februari 2009. Since then he is preparing a spin-off company in silicon photonics, named Caliopa.
Abstract: Point-to-point fiber networks offer the highest possible bandwidth and security to the end user. However, every end-user connection requires a separate transceiver in the central office, making these networks more expensive than PON architectures. At Caliopa - a startup spinning out of IMEC - we can integrate 12 transceivers in a single package by using silicon photonics. This approach greatly reduces the CO equipment cost as well as the power consumption of a point-to-point FTTH network, enabling FTTH networks with the bandwidth, security and flexibility of point-to-point at the cost of PON.
Session 4: Technologies and Applications for FTTH
- 11:30-11:55 Dr. Anthony Kelly, Amphotonix
“High Performance Polarisation Independent Reflective Semiconductor Optical Amplifiers in the S, C and L bands”
- 11:55-12:20 Ioannis Tomkos, Athens Information Technology
“Electronic Equalisation Technologies for FTTH Access Networks”
- 12:20-12:45 Dr. James Lott, Chief Technology Officer, (co-authors Prof. Nikolay Ledentsov, CEO, and Jörg-R. Kropp), VI Systems GmbH
“Similarities in Datacenters, Local Area Networks, and Fiber-to-the-Home Systems: Trends, Bottlenecks, and Opportunities for Vertical Cavity Surface Emitting Lasers”
|Speakers:||Dr. Anthony Kelly|
Dr. Anthony Kelly
Biography & Abstract
Biography: A. E. Kelly received the B.Sc., M.Sc. and Ph.D. degrees from the University of Strathclyde. He previously worked at British Telecom Laboratories and Corning and was a cofounder of Kamelian Ltd and Amphotonix Ltd., Glasgow, UK. He currently holds a senior lecturer position at the Electrical Engineering Department University of Glasgow, UK. His current research is in the use of semiconductor optical amplifiers for PONs, optical burst switching, and ultrafast optical switching.
Dr. Kelly has published over 100 journal and conference papers on a range of optoelectronic devices and systems and holds a number of patents.
Abstract: Many types of WDM-PON architectures exist, including those which require operation in two wavelength bands; one for the upstream, the other in the downstream direction. Wavelength seeded RSOAs are compatible with these architectures harnessing the cyclic nature of array waveguide de-multiplexers (AWGs). Hence a broadband source can be used to seed several RSOAs covering the S-band such that they can be used as transmitters at the OLT. The adjacent free-spectral range of AWG multiplexers can be used in tandem with a C/L band broad band source to seed RSOA transmitters in the C/L band at the ONU. Thus the same AWG can be used at both the ONU and OLT. In this way, only two separate RSOA designs are required, one for the upstream and a second for the downstream path.
This paper reports on the design, manufacture and test of such an RSOA pairing which covers the 120nm over the S, C and L band providing 25 dB path loss capability over this range with -20dBm seed power. Polarisation independent strained bulk RSOAs have been fabricated in the S band for the first time. In system tests at 1.25Gbit/s, the devices have been shown to operate over >60nm with large return path loss capabilities. With the use of a C/L band RSOA of similar design, contiguous operation over the S, C and L bands using only 2 devices has been demonstrated. Each device is capable of providing >25dB PLC over a 60nm span and hence the combination of the RSOAs provides PLC of >25dB over a wavelength interval of >120nm (1470 nm to 1590 nm).
The temperature performance of the C/L band device has also been studied and a PLC of >20dB has been shown at 60°C. To our knowledge, this represents the largest PLC at 60°C for a polarization independent RSOA.
|Dr. Ioannis Tomkos|
Dr. Ioannis Tomkos
Biography & Abstract
Biography: Dr. Ioannis Tomkos (B.Sc., M.Sc., Ph.D.), is with the Athens Information Technology Center (AIT), since Sep 2002 and is an Adjunct Faculty at the Information Networking Institute of Carnegie-Mellon University, USA (since Nov 2002). In the past, he was senior scientist (1999 - 2002) at Corning Inc. USA and research fellow (1995 - 1999) at University of Athens, Greece. At AIT he founded and serves as the Head of the “High Speed Networks and Optical Communication (NOC)” Research Group that was/is involved in many EU funded research projects (including 5 running and 2 accepted FP7 projects) within which Dr. Tomkos is representing AIT as Principal Investigator and has a consortium-wide leading role (e.g. Project Leader of the EU ICT STREP project DICONET, Project Leader of the EU ICT STREP project ACCORDANCE, Technical Manager of the EU ICT STREP project SOFI, Technical Manager of the EU IST STREP project TRIUMPH, Chairman of the EU COST 291 project, WP leader in many other projects).
Dr. Tomkos has received the prestigious title of “Distinguished Lecturer” of IEEE Communications Society for the topic of transparent optical networking. Together with his colleagues and students he has authored about 300 peer-reviewed archival articles (over 160 IEEE sponsored), including about 100 Journal/Magazine/Book publications. Dr. Tomkos has served as the Chair of the International Optical Networking Technical Committee of IEEE Communications Society and the Chairman of the IFIP working group on “Photonic Networking”. He is currently the Chairman of the OSA Technical Group on Optical Communications and the Chairman of the IEEE Photonics Society Greek Chapter. He has been General Chair, Technical Program Chair, Subcommittee Chair, Symposium Chair or/and member of the steering/organizing committees for the major conferences (e.g. OFC, ECOC, IEEE GlobeCom, IEEE ICC, ONDM, BroadNets, etc.) in the area of telecommunications/networking (more than 80 conferences/workshops). In addition he is a member of the Editorial Boards of the IEEE/OSA Journal of Lightwave Technology, the IEEE/OSA Journal of Optical Communications and Networking, the IET Journal on Optoelectronics, and the International Journal on Telecommunications Management. He is a Fellow of the IET.
Abstract: The use of fiber channel equalization techniques is emerging as a key technology to enable low-cost and hig-performance next generation optical access networks operating at 10 Gb/s and beyond, while reaching tranmission disctances of up to 100km. This presentation outlines the main technology solutions, discusses their limitations and presents results from extensive studies that have been contacted on this topic in the framework of EU project SARDANA.
|Dr. James Lott|
Dr. James Lott
Biography & Abstract
Biography: J. A. Lott is Chief Technology Officer (CTO) at VI-Systems (VIS) GmbH. VIS specializes in high bandwidth short-reach optical data link products. Dr. Lott holds a BS degree (UC Berkeley) and a Doctorate (Univ. of New Mexico), both in electrical engineering. He has over 20 years of experience leading industrial and governmental R&D programs in micro-photonics/-electronics and high volume integrated systems manufacturing. Previously he performed research at Sandia National Laboratories including work on red and near-infrared vertical cavity surface emitting lasers (VCSELs). He served as a Visiting Scientist at the NEC Optoelectronics Research Center in Japan (1995) and at Samsung Electronics Company in Korea (1996), working on various aspects of laser diode design, reliability, integration, packaging and manufacturing, and consumer electronics applications. His research groups have focused primarily on the development of quantum well and dot electro-optical devices, the integration of VCSELs with silicon-based integrated circuits and micro-electro-mechanical systems, and on related vertically integrated microsystems technologies.
Abstract: Datacenters, LANs, and Fiber-to-the-Home (FTTH) systems exhibit similar trends in signal aggregation and bottlenecking. Assemblies based on vertical cavity surface emitting lasers (VCSELs) will likely play a key role in facilitating future generations of FTTH networks, in concert with the rise of the use of VCSELs in datacenters and LANs.
Single mode fiber (SMF)-based passive optical networks (PONs) that share cable and systems costs via the use of splitters exist in a variety of configurations. The Ethernet in the First Mile (EFM) initiative led to an early PON standard that was soon further developed by the IEEE and the Metro Ethernet Forum into a completed 10 Gb/s Ethernet PON (10G EPON) standard. One of the network options specified in the 10G EPON is a LAN-like environment with an active node between a feeder and a group of end-users. This situation occurs in densely built residential areas and multiple dwelling units/buildings, and resembles the structure of the current business LAN environment where multimode fiber (MMF) is preferred for data transfer rates of 10 Gb/s and faster. This is due primarily to the low connectivity cost and the use of the inexpensive 850 nm VCSEL technology.
In the IEEE 802.3ba 40/100 GbE (Ethernet) standard, with ratification expected in June this year, the lowest speed in the system is defined by the electrical input/output (I/O) running at 10 Gb/s (G). These 10G serial links undergo bandwidth aggregation to 40 or 100 Gb/s within MMF ribbons (10G x 4 and 10G x 10). Signal aggregation over the installed base, however will require an even higher serial transmission speed per channel per wavelength. This is realized within the 100GbE by using 25G x 4 transmission over SMF. On the horizon is the need for 40 to 50 Gb/s serial transmission using the already installed duplex multimode fiber links, particularly those utilizing the "Structured Cabling" standard in opposition to a fiber ribbon approach. According to the IEEE Ethernet Roadmap by 2015 the I/O speed will reach 40 Gb/s while the signal aggregation will reach 400 Gb/s up to 1 Tb/s. These blazing data transfer rates may possibly be served both by ribbons (40G x 25) and by WDM-like approaches at much higher serial transmission speeds.
In the presentation we compare and contrast the critical issues of the power, performance, and cost of high speed serial data transmission in datacenters, LANs, and FTTH systems from the perspective of the VCSEL technology. We focus on potential short-reach optical link solutions based on multi-mode and single-mode ultrahigh-speed infrared VCSELs that use direct current and electro-optic modulation schemes for mainstream FTTH applications.