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October 7, 2014

Deployment strategies for 40G/100G coherent networks: trade-offs and impacts

Jean-Sébastien Tassé

Product Manager

Jean-Sébastien Tassé has more than 13 years of experience in sales and marketing in the high-tech sector. He currently holds the position of Product Line Manager in EXFO’s optical business unit, where he oversees the business strategy, roadmap and launch strategy of the optical spectrum analyzer and dispersion product lines. At EXFO, he is also business development manager for the market segments of submarine networks and fronthaul/backhaul networks (optical products). He began his career as Sales Engineer for Gentec Electro-Optics, where he was responsible for direct and channel sales in specific regions in the Americas, Asia and Europe. As Business Development Manager for the Thin Film Research Laboratory at the École Polytechnique de Montréal/University of Montreal, he was instrumental in delivering revenue growth in analytical services for companies. Jean-Sébastien holds a bachelor's degree in Engineering Physics and a master’s degree in Electrical Engineering (optics) from Université Laval, in Québec City, Canada.

When deploying 40G/100G technologies, service providers must choose whether the new wavelengths will be deployed over an existing network and traffic (brownfield deployments) or over unused, new fibers (greenfield deployments). This choice usually depends on the context, type of network (metro, long-haul, etc.), capacity requirements and so forth. But more importantly, each approach has its pros and cons, and specific set of challenges. 

This webinar explores the tradeoffs of greenfield and brownfield next-generation architectures, the impairments these approaches give rise to as well as the associated costs. More specifically, this webinar will discuss three impairments (polarization mode dispersion, nonlinear effects and interchannel crosstalk), their relative prevalence in greenfield vs brownfield deployments, and their impact on bit error rate. Finally, a way to analyze these impairments non-intrusively will be presented.