ECOC 2005 Symposia

Monday, 26 September (14:00 – 15:45 and 16:15 – 18:00)

Clyde Auditorium

Symposium on Slow Light
(Conference sessions Mo3.1 & Mo4.1)

Session 1 – Mo3.1
Chair: Thomas Krauss, University of St Andrews, UK

14:00 – 14:05
Chairman's Introduction
T Krauss, University of St Andrews, UK

Mo3.1.1 14:05– 14:30
Invited - Optical Slow-Wave Structures
A Melloni, F Morichetti, M Martinelli, Politecnico di Milano, Italy
Optical nonlinear processes and wave interactions are strongly enhanced inside an optical slow-wave structure consisting of a cascade of direct-coupled resonators. By combining the nonlinearity with the selective spectral behaviour, an optical oscillator and an optical limiter are predicted.

Mo3.1.2 14:30 – 15:00
Invited - Dynamic Photonic Crystals: Stopping Light and Time Reversal
S Fan, M Fatih Yanik, Stanford University, United States
By combining photonic crystal resonances with dynamics, we show that photonic crystals can be used to stop, store and time-reverse light pulses.

Mo3.1.3 15:00 – 15:30
Invited - Controlling Light Speed in Semiconductors
C Chang-Hasnain, University of California, United States
Rapid progress has been made in achieving control in group velocity of optical signals. We review advances of ultraslow and fast light in semiconductors and their applications. We introduce a new figure-of-merit: storage-bandwidth product.

Mo3.1.4 15:30 – 15:45
Slow, Superluminal and Negative Group Velocity in Optical Fibres Using Stimulated Brillouin Scattering
L Thévenaz, EPFL, Switzerland, K-Y Song, University of Tokyo, Tokyo, M González Herraez, University of Alcalá de Henares, Spain
Active control of the group velocity in optical fibres is demonstrated, allowing long delays, faster-thanlight propagation and even negative velocity, for which the peak of a pulse exits the fibre before entering the input end.

Mo4.1. 1 16:15 – 16:45
Invited - Figures of Merit for Linear and Nonlinear Slow Light Devices
J Khurgin, John Hopkins University, United States
A unified approach to estimation and optimization of the performance of various slow light devices in practical optical networks is described. Novel means of mitigating dispersion-induced limitations are considered.

Mo4.1.2 16:45 – 17:15
Invited - Delay-line Storage in Optical Communications Switching
D Hunter, University of Essex, United Kingdom
Ladder networks, consisting of chains of 2 × 2 switches and delay lines, have many potential uses in future optical communications. These are discussed, and implementation via photonic crystal technology and advances in integrated optics is outlined.

17:15 – 18:00
Discussion

Tuesday, 27 September (14:00 – 15:45 and 16:15 – 18:00)

Clyde Auditorium

Symposium on Optimizing Networks For Bursty Data Traffic
(Conference sessions Tu3.1 & Tu4.1)

Session 1 – Tu3.1
Chair: Martin Zirngibl, Lucent Technologies, United States

Tu3.1.1 14:00 – 14:30
Invited - Randomized load balancing and T-WDM ring networks
P J Winzer, Lucent Technologies, United States
We review robust and scalable network architectures that support dynamic traffic variations. In particular, we discuss randomized load balancing across optically groomed, time-slotted WDM rings (T-WDM).

Tu3.1.2 14:30 – 15:00
Invited - Next Generation 100G Ethernet
M Duelk, Lucent Technologies, United States
We give an overview over the key components on the physical and the data link layer of 10 GbE and discuss how these can be scaled to next generation 100 GbE, both for Metro and Core networks.

Tu3.1.3 15:00 - 15:30
Invited - Managing Bits Instead of Waves: Large-Scale Photonic Integrated Circuits Enable Implementation of Multi-Wavelength "Digital" Optical Networks
D Welch, Infinera, United States
The practical development of large-scale photonic integrated circuits (PICs) has allowed the consolidation of many devices and functions into a single optical component. Beyond the obvious cost, space and power benefits this enables, large-scale PICs also act as a catalyst for the wide-spread use of feature-rich electronics in optical networks. Together this enables multi-wavelength optical networks to benefit from greater reconfigurability, better reliability, simpler operations and architecture, and increased service flexibility. These advances are becoming reality through the practical network deployment of large-scale photonic integrated circuits in real-world optical networks.

15:30 – 15:45
Questions

Session 2 – Tu4.1
Chair: Martin Zirngibl, Lucent Technologies, United States

Tu4.1.1 16:15 – 16:45
Invited - Buffer Requirements for High Speed Routers
D Wischik, University College London, United Kingdom
A core Internet router can typically buffer 250ms worth of data (1.25GByte at 40Gb/s). This would be challenging for an all-optical router. Happily, recent theory suggests that the optimal buffer size is around 30kByte.

Tu4.1.2 16:45 – 17:15
Invited - Investigation of the impact of traffic growth and variability on future network architectures
M Düser, T-Systems International GmbH, Germany
It is discussed how future growth in traffic volume and traffic statistics might impact network architectures, and which control plane functionalities might be necessary to provide the required service levels and maximise efficiency.

Tu4.1.3 17:15 - 17:45
Invited - Dynamic Bandwidth Allocation in IP/Optical Networks
J Gannett, G Clapp, Skoog, A Von Lehmen, Telcordia, United States
IP over optical network performance and traffic carrying capacity can be significantly improved with dynamic bandwidth allocation. For IP networks it is highly desirable to reallocate bandwidth without changing the IP virtual topology. We accomplish this using SDH/SONET virtual concatenation.

17:45 – 18:00
Questions

Wednesday, 28 September (08:30 – 10:15 and 10:45 – 12:30)

Clyde Auditorium

A Review of Major International Programmes
(Conference sessions We1.1 & We2.1)

Session 1 – We1.1
Chair: Polina Bayvel, University College London, United Kingdom

08:30 – 08:35
Introduction

We1.1.2 09:00 – 09:25
Invited - Achievements of the European NOBEL Project
C Cavazzoni, A Di Giglio, G Ferraris, A Manzalini, M Schiano, Telecom Italia Lab, Italy , G. Edwall, Ericsson , G Eilenberger, Alcatel SEL, Germany , H Haunstein, Lucent Technologies , S Herbst, Marconi Ondata , M Jaeger, T-Systems , G Lehmann, Siemens , J F Lobo, Telefónica I+D, Spain , S Santoni, Pirelli Labs
This paper presents the latest results achieved by the IST project NOBEL highlighting the evolution of transport networks in Europe in terms of architectures, traffic engineering and economics, control plane and transmission technology issues.

We1.1.3 09:25 – 09:50
Invited - Multi Service Access Everywhere (MUSE)
P Vetter, F Fredricx, E Gilon, B De Vos, Alcatel Bell NV, Belgium , M Borgne, France Telecom R&D, France , J Bergmann, Siemens , E Areizaga, Robotiker , P Adams, BT, United Kingdom , F Renon, Telecom Italia Labs, Italy , H Mickelsson, Ericsson , G Rajan, Lucent Technologies
A survey is given of the MUSE network architecture. Several aspects at data plane and control plane are addressed to achieve a multi service access network. Some specific considerations for optical access are also described.

We1.1.4 09:50 – 10:15
Invited - Ultra-High Capacity Optical IP Routers for the Networks of Tomorrow: IRIS Project
D T Neilson, D Stiliadis, P Bernasconi, Bell Laboratories, Lucent Technologies, Unites States
Challenges of both the data and control planes for building future high capacity routers using optics will be discussed. Architectures and technologies for addressing these challenges including load balancing and wavelength switching will be presenter.

Session 2 – We2.1
Chair: Chair: Polina Bayvel, University College London, United Kingdom

We2.1.1 10:45 – 11:15
Invited - LASOR (Label Switched Optical Router): Architecture and Underlying Integration Technologies
D J Blumenthal, M Masanovic, University of California, United States
An overview of the DARPA DoD-N funded LASOR project is presented. Progress on the buffered optical data router, the underlying integrated photonic technologies and subsystems will be described as well as future challenges.

We2.1.2 11:15 – 11:45
Invited - Terabit Network Revolution in Japan
K Hagimoto, NTT, Japan

We2.1.3 11:45 – 12:15
Invited - The Future of Optical Transmission in Access and Metro Networks - an Operator's View
R Davey, D B Payne, BT, United Kingdom
To economically support significant bandwidth growth, it is necessary to simplify networks. The concept of long reach access promises to achieve this and the first steps in demonstrating its feasibility have been reported.

12:15 – 12:30
Discussion

Thursday, 29 September (08:30 – 10:15 and 10:45 – 12:30)

Clyde Auditorium

Symposium on Quantum Communications
(Conference sessions Th1.1 & Th2.1)

Session 1 – Th1.1
Chair: John Rarity , University of Bristol, United Kingdom

Th1.1.1 08:30 – 09:00
Invited - High-Brightness Source of Heralded Single Photons for Quantum Communications from Microstructured Fibre
O Alibart, J Fulconis, J G Rarity, University of Bristol, United Kingdom, P St J Russell, W J Wadsworth, University of Bath, United Kingdom
We discuss a novel micro-structured fibre source of photon pairs and heralded single photons suitable for quantum communications. This bright source emits up to ~3.2.10 5 /sec of narrow-band heralded single photons.

Th1.1.2 09:00 – 09:30
Invited - Long Range Quantum Communications
A Beveratos, M Halder, J Van Houwelingen, S Tanzilli, N Gisin, H Zbinden , Université de Genève, Switzerland
Quantum communication is about distributing entangled qubits with photons and processing with trapped atoms. We present a coherent photon pair source for long distance entanglement swapping, and a quantum interface, transferring entanglement from the telecom photons to photons within the absorption spectrum of trapped atoms.

Th1.1.3 09:30 – 10:00
Invited - Entangled State Quantum Key Distribution and Teleportation
A Poppe, A Fedrizzi, H Hübel, R Ursin, Institut für Experimentalphysik der Universität Wien, Austria , A Zeilinger, Institut für Experimentalphysik der Universität Wien, Austria and Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Austria
Entanglement is a necessary prerequisite for unconditionally secure quantum key distribution (QKD). The generation and distribution of polarization entangled photon pairs will be discussed as the basis for QKD, teleportation and quantum repeaters.

10:00 – 10:15
Discussion

Session 2 – Th2.1
Chair: John Rarity , University of Bristol, United Kingdom

Th2.1.1 10:45 - 11:15
Invited - An Approach to High Key Exchange Rate Quantum Key Distribution in Optical Fibres
G S Buller, K J Gordon, V Fernandez, R J Collins, S Pellegrini, Heriot-Watt University, United Kingdom , S D Cova, Politecnico di Milano, Italy , P D Townsend, University College Cork, Ireland
This presentation will discuss the issues limiting key exchange rates in fibre-based quantum key distribution systems, paying particular attention to the bottleneck of single-photon detectors. The approach of using 850nm wavelength quantum channels is discussed.

Th2.1.2 11:15 - 11:45
Invited - Automated One-way Quantum Key Distribution System Based on Fibre Optics
Z Yuan, A J Shields, Toshiba Research Europe Ltd, United Kingdom
We present a one-way quantum key distribution system with active phase compensation. The system is characterized by a quantum bit error rate of 0.87% and a duty cycle of 99.6%.

Th2.1.3 11:45 - 12:15
Invited - Quantum Key Distribution with Coherent States at Telecom Wavelength
J Lodewyck, Thales Research and Technologies, France & Laboratoire Charles Fabry de l'Institut d'Optique, France , T Debuisschert, Thales Research and Technologies, France , R Tualle-Brouri, P Grangier, Laboratoire Charles Fabry de l'Institut d'Optique, France
A coherent states quantum key distribution system based on standard 1550 nm telecom components can transfer a raw secret key at a rate up to 1Mb/s with a proven security against Gaussian or non-Gaussian attacks.

12:15 - 12:30
Discussion

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