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Alcatel-Lucent and BT achieve fastest real-world fiber speeds of 1.4Tb/s with a world record spectral efficiency of 5.7b/s/Hz over core network
[January 21, 2014]

Alcatel-Lucent and BT achieve fastest real-world fiber speeds of 1.4Tb/s with a world record spectral efficiency of 5.7b/s/Hz over core network

(M2 PressWIRE Via Acquire Media NewsEdge) Alcatel Lucent - New 'flexible grid' infrastructure allows more efficient bundling ofchannels, (42.5% increase in spectral efficiency) and data speeds of up to 1.4Terabits per second (Tb/s) achieved without deployment of more fiber Paris, January 21, 2014 - Alcatel-Lucent (Euronext Paris and NYSE:ALU) and BT have today announced trial speeds of up to 1.4Tb/s with a recordspectral efficiency of 5.7 bits per second per Hertz (b/s/Hz)on an existingcore fiber connection. This is believed to be the fastest speed ever achievedin commercial grade hardware in a real-world environment and is equivalent totransmitting 44 uncompressed HD films in a single second.

The field trial, conducted over an existing fiber link between the BT Towerin London and BT's Adastral Park research campus in Suffolk, used a new'flexible grid' infrastructure (Flexgrid) to vary the gaps between transmissionchannels, usually set at 50Gigahertz (GHz). By increasing the density ofchannels on the fiber, this approach achieved up to 42.5 percent greater datatransmission efficiency compared to today's standard networks.

The trial demonstrated that use of the Flexgrid approach can increase BT'score network capacity using existing optical fibers, potentially reducing theexpense of laying more fiber as bandwidth demands grow. This could allow BT tomore easily scale its core network capacity to meet consumer and businessdemands for more bandwidth-hungry services such as streaming video, whilst moreefficiently using its existing core fiber infrastructure.

The trial was conducted through the overlaying of an "Alien Super Channel"comprised of seven 200 Gigabits per second (Gb/s) channels bundled together toprovide a combined capacity of 1.4Tb/s. By reducing the spectral spacingbetween the channels from 50GHz to 35GHz using the 400Gb/s Photonic ServicesEngine (PSE) technology on the 1830 Photonic Service Switch (PSS), spectralefficiency is enhanced by almost 43%. The 1830 PSS can be used as an opticalextension shelf of the 7750 Service Router (SR) and the 7950 Extensible RoutingSystem (XRS). Flexgrid is the key to creating high-capacity, spectrallyefficient super channels. The super channel is "alien" because it operatestransparently on top of BT's existing optical network.

Key Facts: * During October and November of 2013, BT and Alcatel-Lucent successfullydemonstrated a number of world-leading high-speed alien wavelength technicalachievements, including a record spectral efficiency of 5.7b/s/Hz which isequivalent to fitting a 1Tb super channel in less than 200GHz spectrum.

* The speeds were achieved on a 410km fiber link between BT's Adastral Parkresearch campus in Ipswich and the BT Tower in London * The trials were performed using production equipment that was softwarereconfigurable between 200Gb/s using 16 QAM modulation and 100Gb/s using QPSKmodulation * Alien Wavelengths allow telecom operators like BT to introduce new featuresand technology without the need to update the existing optical transportinfrastructure * Flexgrid maximizes the spectral efficiency of the installed fiberinfrastructure, deferring the need to deploy costly new fiberinfrastructure * Trial and evaluation of the 1.4Tb/s alien super channel showed stable,error-free operation, when being transmitted with a mix of 40Gb/s and 100Gb/snative wavelengths. This was achieved for standard 50GHz sub-channel spacingand for flexgrid with sub-channel spacing down to 35GHz * Working with BT to efficiently and cost effectively increase high-speednetwork capacity is aligned with The Shift Plan, the industrial strategy toreposition Alcatel-Lucent as a specialist vendor of IP Networking andUltra-Broadband Access Quotes: Neil J. McRae, Chief Network Architect at BT said: "Investing for thefuture is core to BT's strategy and thisoutstanding achievement demonstrates that BT can easily introduce newfeatures and technologies across our core network maximizing the efficiency ofour existing infrastructure. Working with Alcatel-Lucent on this trial has beenhighly productive in demonstrating the viability of an alien wavelengthapproach" Dr Tim Whitley, BT's MD of Research and Innovation said: "BThasalonghistory of leading innovation in telecommunications, from the earliestdays of the electric telegraph to today's global fiber networks.These trialscontinue that tradition,as weworkwithAlcatel-Lucentto push the boundaries offiber technology,allowing us tosupport the ever increasing bandwidth requiredby our customers, and deliver new and exciting services which rely on fast,data-hungry applications" Cormac Whelan, CEO, Alcatel-Lucent UK & Ireland said: "As part ofour long-standing relationship, BT and Alcatel-Lucent continue to work togetherto use innovation from Bell Labs, Alcatel-Lucent and BT Research andDevelopment to move the industry forward and meet the ever evolving needs ofthe marketplace. These trials represent another step forwards by BT andAlcatel-Lucent in this continual evolution" About BT BT is one of the world's leading providers of communications services andsolutions, serving customers in more than 170 countries. Its principalactivities include the provision of networked IT services globally; local,national and international telecommunications services to its customers for useat home, at work and on the move; broadband and internet products and servicesand converged fixed/mobile products and services. BT consists principally offour lines of business: BT Global Services, BT Retail, BT Wholesale andOpenreach.

For the year ended 31 March 2013, BT Group's reported revenue was 18,103mwith reported profit before taxation of 2,315m.

British Telecommunications plc (BT) is a wholly-owned subsidiary of BT Groupplc and encompasses virtually all businesses and assets of the BT Group. BTGroup plc is listed on stock exchanges in London and New York.

For more information, visit The BT Group Newsroom can be contacted on its 24-hour number: 020 73565369. From outside the UK dial + 44 20 7356 5369. Email: .

ABOUT ALCATEL-LUCENT (EURONEXT PARIS AND NYSE: ALU) Alcatel-Lucent is at the forefront of global communications, providingproducts and innovations in IP and cloud networking, as well as ultra-broadbandfixed and wireless access to service providers and their customers, enterprisesand institutions throughout the world.

Underpinning Alcatel-Lucent in driving the industrial transformation fromvoice telephony to high-speed digital delivery of data, video and informationis Bell Labs, an integral part of Alcatel-Lucent and one of the world'sforemost technology research institutes, responsible for countlessbreakthroughs that have shaped the networking and communications industry.Alcatel-Lucent innovations have resulted in the company being recognized byThomson Reuters as a Top 100 Global Innovator, as well as being named by MITTechnology Review as amongst 2012's Top 50 "World's Most Innovative Companies".Alcatel-Lucent has also been recognized for innovation in sustainability, beingnamed Industry Group Leader for Technology Hardware & Equipment sector inthe 2013 Dow Jones Sustainability Indices review for making globalcommunications more sustainable, affordable and accessible, all in pursuit ofthe company's mission to realize the potential of a connected world.

With revenues of Euro 14.4 billion in 2012, Alcatel-Lucent is listed on theParis and New York stock exchanges (Euronext and NYSE: ALU). The company isincorporated in France and headquartered in Paris.

For more information, visit Alcatel-Lucent on: , read the latest posts on theAlcatel-Lucent blog and follow the Companyon Twitter: .



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