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| Digital Video at iGRID2002 |
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The iGrid2002 conference is focusing on e-science, Grid and Virtual Laboratory applications enabled by high-performance global networks. iGrid presents the latest developments in these areas. Worldwide virtual laboratory applications based on global high-performance optical networks are crucial to a wide-range of emerging science disciplines as well as to many industries. As part of a prototype global virtual laboratory demonstration, this project showed the potential for applications having access to significant amounts of bandwidth, allowing transmitting multiple simultaneous streams of uncompressed digital video at 270 Mbps (600 Mbps with Forward Error Correction). In this demonstration, a Path 1 Cx1000 IP Video Gateways received a 270 Mbps CCIR-601 serial digital video stream, encapsulated the stream into IP and added specialized stream handling for transmission over a long haul Gigabit Ethernet connection. The Cx1000 was used because it is specifically optimized for providing high quality digital video over IP networks. It is also designed to take advantage of high performance networks, not just for contending with today's narrowband networks. This experiment also demonstrated the power of next generation optical network services based on lambda-switching to deliver multiple streams of extremely high quality digital video. With these types of networks, the constraints of the current Internet disappear. The connections between Chicago and Amsterdam consisted of 2.5 Gbps provisioned by SURFnet and 10 Gbps transatlantic links provisioned by SURFnet and StarLight (www.surfnet.nl). NetherLight, now at 10 Gbps, is a state-of-the-art optical multi-gigabit/s connection between Amsterdam and Chicago, the two locations that compose the current centre for next generation, optical Internet research. This is the world's first transatlantic link provisioned for research. This 10 Gbit/s lambda connection constitutes the basis for experiments with new technologies for a fully optical Internet. |
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