Link design: A forgotten art?

Workshop 18
Sunday, 18 September, 2011
14:30 - 18:00
Room F

The recent development of coherent detection associated with digital signal processing is now coming to the market introducing a new generation of systems: this will bring a completely new approach in optical link design. While dispersion management was a key technique to optimize performance of optical systems and PMD was a key constraints limiting the symbol rate increase, it could seem that for future coherent systems link design will be much simpler. Moreover, the potential of signal processing could allow to believe that all design challenges are now in the receiver. Nevertheless, the cohabitation of transmission technologies relying on dispersion management (mainly 10 Gb/s) with coherent systems, the development of reconfigurable and dynamic networks, the need of restoration and the introduction of more automation in the network management could make link design even more challenging in the coming years.

The workshop will start with contributions from academic professors discussing main changes introduced by coherent detection highlighting opportunities and problems. Then system suppliers will describes how link design has evolved and their views of what will happen introducing coherent systems in the network. Eventually, operators will share their perspectives describing how they manage their networks and why various new technologies (such as ROADM, GMPLS, restoration, etc.) could push the need for a simplified link design.

The aim of the workshop is to have a technical discussion and as such, contributions will be welcome during the workshop: speakers can produce up to 3 slides to highlight the issue they wish to discuss.


Session I: Contributions from the Academia

Analytical Modeling of the Impact of Non-linear Effects on DWDM Coherent Systems
Pierluigi Poggiolini, Politecnico di Torino, Italy

Comparing the Impact of Cross Nonlinearities (XPM and XPolM) in Hybrid OOK-PSK Operation
Klaus Petermann, Technische Universität Berlin, Germany

Link Design for Efficient Nonlinearity Compensation
Guifang Li, University of Central Florida, USA

Can Signal Processing Blindly Correct for Link Polarization Effects, or Is Optical Expertise Still Needed?
Mark Shtaif, Tel Aviv University, Israel

Session II: Views from the Industry

The Art of Mixed Data Rate System Design: Black Magic or Comprehensive Design Rules?
Dirk van der Borne, Nokia Siemens Networks, Germany

Coherent Line Design
Julien Poirrier, Huawei, France

Undersea Systems in the Age of Coherent Receivers
Alexei Pilipetiskii, TE SubCom, USA

Link Design: Still Essential in a World of Flexible Optics
Michael Eiselt , ADVA, Germany

Session III: Operators perspectives

What Design Opportunities Do Reconfigurable Networks and Coherent Formats Bring for Operators?
Jean Luc Augé, France Télécom, France

A Carrier Perspective on Standardized Link Design
Lynn E. Nelson, AT&T, USA

Session IV - Contributed presentations from the floor and Discussion