[LINK] 640Gbps over fiber-optic with no errors
rchirgwin at ozemail.com.au
Thu Apr 16 07:08:23 AEST 2009
I have two interviews with Professor Ben Eggleton here:
stephen at melbpc.org.au wrote:
> . In a paper published in the Feb 16th edition of Optics Express,
> researchers detail their approach for de-multiplexing signals at high
> speeds, claiming that they were able to achieve 640Gbps over fiber-optic
> lines with no errors.
> The material they used in the chip is chalcogenide, and Australian
> researchers were talking about the high-speed networking possibilities of
> the material last summer.
> Calling it "just a piece of scratched glass," they said it could
> potentially be cheap to produce.
> At these bit rates, the researchers say that it is only possible to
> perform switching with an all-optical system, using optical time-division
> multiplexing. And chalcogenide allows for "femtosecond response time".
> Recently, Sreedhar Kajeepeta, a CTO at CSC, wrote about how a Terabit
> Ethernet could be used.
> Presumably, it would not just be used for aggregating lower-speed links,
> but would inspire us to reach higher, to new applications, perhaps to
> something called Augmented Reality. That application is where real-life
> video and audio are combined with virtual video and audio.
> Also: <http://www.networkworld.com/news/tech/2009/033009-tech-update.html>
> By Sreedhar Kajeepeta , Network World , 03/30/2009
> Looking down the LAN road, the Terabit Ethernet milestone is very much in
> While 3.2Tbps and 6.4Tbps speeds were demonstrated in test environments
> by Siemens/WorldCom and NEC/Nortel respectively starting in 2001, the
> first set of viable solutions are just now taking shape.
> The Feb. 16th edition of Optics Express included a paper detailing the
> efforts of researchers from Australia, Denmark and China who joined
> forces to demonstrate the feasibility of a Terabit Ethernet over regular
> fiber-optic cables. Terabit speeds bring us to the x1Million improvement
> in speed from where Ethernet started in 1976.
> By focusing on materials research related to fiber-optic circuits,
> Australia's Center for Ultra-high bandwidth Device for Optical Systems
> (CUDOS) achieved a breakthrough with the introduction of an exotic
> compound called "Chalcogenide" that could make commercializing Terabit
> circuits practical.
> Although CUDOS Research Director Ben Eggleton says it will take years to
> reach production readiness, this does coincide with Bob Metcalfe's
> prediction that we may start seeing the first commercial use of Terabit
> Ethernets by 2015.
> Today, of course, the industry is focused on shorter-term goals.
> The IEEE 802.3ba is working on 40GbE and 100GbE standards, and NTT is the
> first company to announce a reliable 100GbE circuit. But many network
> vendors are focusing on 10GbE, in particular, development of cost-
> effective 10GbE interfaces for copper so buyers don't have to upgrade to
>>From their debut in 2001, 10GbE switches have indeed become more
> affordable, dropping from about $40,000 to $4,000. Industry analysts
> expect 10GbE adoption to jump 30% this year.
> Most campus LANs are getting by with speeds of 100Mbps, but there are
> examples of 1GbE and 10GbE switches at the server and backbone layers,
> and also the use of fiber-optics between servers. And most laptops ship
> with an Ethernet card capable of handling 1Gbps or even 10Gbps..
> Link mailing list
> Link at mailman.anu.edu.au
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