Thursday, 22 September, 2011
11:15-13:00
Le Mt-Blanc

Th.11/12.Le Mt-Blanc • Symposium on Undersea Systems: Technologies and Applications

Chairs: Ekaterina Golovchenko, TE Subsea Communications LLC, USA, and Jose Chesnoy, Alcatel-Lucent, France
 
Session 2: Alternative applications and Legacy Systems Upgrades
 
Th.12.Le Mt-Blanc.1
Opening remarks J. Chesnoy & E. Golovchenko
 
Th.12.Le Mt-Blanc.2
UNDERSEA TELECOMMUNICATION TECHNOLOGIES IN OFFSHORE SECTOR
Marsha Spalding, TE SubCom, USA
The offshore sector of the undersea telecommunication industry has seen development of new, purpose-designed undersea products and network architectures. Interesting and challenging applications are evolving as offshore systems become more economically practical. Special undersea cable and a variety of subsea hardware products have been introduced; some notable examples are various “wet” subsea optical connector manifolds and a robust deep-water dynamic riser cable to connect sea bottom cables with floating facilities.
 
Th.12.Le Mt-Blanc.3
SUBMARINE INFRASTRUCTURES FOR NEUTRINO ASTRONOMY
Claude Vallee, CPPM IN2P3, France
We will present the deep sea permanent infrastructure of the ANTARES
neutrino telescope, operational since 2008 offshore of Toulon at a depth of 2500 m,
as well as the plans for a second generation telescope developped by the KM3NeT
european consortium in connection with marine environmental sciences.
 
Th.12.Le Mt-Blanc.4
TECHNOLOGIES AND STRATEGIES FOR UPGRADING EXISTING SUBMARINE CABLE SYSTEMS
Steve Grubb, Fellow, Infinera, USA
Carriers are facing intense pressure in todays global submarine market to rapidly and cost effectively upgrade existing submarine cable systems to high capacities. New architectures are also being investigated as differentiators in order to rapidly deliver a variety of new services.
 
Th.12.Le Mt-Blanc.5
COHERENT SUBMARINE TECHNOLOGY: DEPLOYMENT DYNAMICS, EFFICIENCIES AND NETWORK ARCHITECTURE IMPACTS
Robert Hadaway, Jamie Gaudette, Darwin Evans, Mark Hinds, Elizabeth Rivera-Hartling, John Sitch, Ciena, USA
Carrier adoption and deployment of 40G coherent technology, with accompanying digital signal processing, is demonstrating the advantages of adaptive impairment correction and transoceanic transmission performance on Submarine cables. Recent experience will be discussed, along with the move to 100G coherent and impacts on the potential for a unified Terrestrial and Submarine global network architecture. 

Th.12.Le Mt-Blanc.6
SUBMARINE UPGRADES: IS THE SKY THE LIMIT?
Bertrand Clesca, Xtera Communications, France
Over the last few years, advances in transmission and component technology have steadily increased the capacity of submarine cable systems, including those already installed to well beyond the original targets. We will discuss whether there is a limit to this for legacy systems – other than the theoretical fibre limit – and how close one can get in the context of latest processing and amplification technologies. These new technologies will lead to new line designs, which could impose new considerations for keeping systems open to third party upgrades.
 
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FUTURE CAPACITY ENHANCEMENT FOR SUBMARINE REPEATERED SYSTEM
Akira Sugiyama, Liang Dou, Shoichiro Oda, Zhenning Tao, Takeshi Hoshida, Fujitsu, Japan
Status and technical issues of 40G/100G digital coherent submarine system development are addressed. We also discuss the feasibility of submarine cable capacity enhancement by new technologies under research, e.g. spectrally efficient modulation/multiplexing and nonlinear mitigation.

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