Week News Abstract For Fiber Series in 10GTEK
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Altera demos FPGAs interoperability with 100-Gbps optical module
Altera Corp. (NASDAQ: ALTR) says it has successfully demonstrated interoperability between its 28-nm Stratix V GT FPGAs and a 100-Gbps optical module. The company claims this is the first time interoperability has been demonstrated.The demonstration will go on show at OFC/NFOEC at the Los Angeles Convention Center from March 6 to 8, 2012, in the Optical Internetworking Forum (OIF) multi-vendor booth 713 (see "OIF members plan 100G interface interoperability demo").The demonstration tests 28-Gbps transmission technology over 2 km of singlemode fiber, using Molex's zQSFP+ Interconnect System as well as 100-Gbps chips from Gennum Corp.The demonstration takes four channels of PRBS31 data, which are transmitted from the Stratix V FPGA, over a Gennum VSR host channel with 12 dB of insertion loss, through a Molex zQSFP+ connector to Gennum clock and data recovery (CDR) integrated circuits. The retimed outputs of the CDRs are transmitted to the Molex 1490-nm optical module, which loops the optical data back to its receiver through 2 km of singlemode fiber. In the receive direction, the data flows in the reverse order through the cascaded blocks ending at the FPGA. The error checkers within Altera's FPGA verify that the entire transmit and receive data path through the system is operating error free.Altera's Stratix V GT devices are designed to support 25- to 28-Gbps data streams for next-generation 100-Gbps pluggable fiber-optic modules, line cards, and direct-attach copper cables using the 25G QSFP+ and CFP2 form factors. Stratix V FPGAs support backplane, optical module, and chip-to-chip applications through 28-Gbps transceivers, using up to 66 full-duplex 14.1-Gbps transceivers.Altera claims that the Stratix V FPGAs deliver the highest system bandwidth at the lowest power consumption: under 200 mW per channel at 28 Gbps. They also provide exceptional jitter performance and reliability, the company claims.
Boston University, Intune Networks create BURST network
Boston University and Intune Networks have formed a partnership to create a next-generation research and development network, entitled the Boston University Research Switch and Transport Network (BURST). Using the capabilities of the new network, the partners plan to explore new network architectures, identifying how they can meet the challenges presented by the explosion in Internet traffic.The BURST fiber-optic network will be based on Intune’s Optical Packet Switch and Transport (OPST) technology, which uses fast-tuning lasers to switch and transport packets of data simultaneously. Intune claims that OPST is the world’s first commercial realization of optical packet switching (see "Intune Networks' Verisma optical burst switch/transport platform now available").By switching packets optically and allocating bandwidth dynamically, OPST is able to reduce the complexity and cost carriers will incur in building out networks to support the rising bandwidth demand and performance requirements of fast emerging services, Intune claims. In addition, this architecture is designed to facilitate new “network centric” services that combine network resources (bandwidth) and IT resources (content storage and computing) provided by the network operator, enabling whole network virtualization.The Boston University Photonics Center BURST program will enable R&D network partners to take their services, applications, products, and operational processes and test them on an operational network under real life scenarios and conditions.Professor Alexander Sergienko from the Boston University Photonics Centre said, “The network will ultimately be capable of tying together major technology centers, business parks, and universities in the Boston metro area providing services to corporate and academic research groups. The basis for this network would be to develop a metro-regional network architecture based on Optical Packet Switch and Transport technology that will be able to offer high scalability, survivability, and cost-efficiency for future services demands. The proposed architecture promises a green approach to information transfer through lower resource consumption, ultimately delivering greater cost-efficiency for future traffic volumes and improved quality of experience compared to current metro network architectures."Intune says the partnership is an important part of the company’s plans for the US this year. "We are rolling out commercial trials in the US this year," said Boston-based Jim Lowrie, senior vice president of worldwide sales, Intune Networks. "To support these trials, it will be very useful for our customers to be able to see the potential of the technology in action on the BURST network."Details of the partnership were announced at an event in Boston which was attended by the Taoiseach (Prime Minister) of Ireland, Enda Kenny T.D.
MEF tackles multiple classes of service support in mobile backhaul networks
The Metro Ethernet Forum (MEF) has unveiled its Mobile Backhaul Initiative for 4G/LTE. The initiative, which combines a new implementation agreement that follows on to the existing MEF 22.1 with position papers and other educational aids, aims to guide service providers in the deployment and use of Ethernet’s multiple classes of service (Multi-CoS) capabilities. Proper use of Multi-CoS can save as much as 25% of the cost of using single CoS in backhaul applications, the MEF suggests.A new implementation agreement, MEF 23.1, is at the heart of the initiative. It builds on the existing MEF 22.1 Mobile Backhaul implementation agreement, which the MEF targeted at Multi-CoS in 2G and 3G networks, to provide specifications for Multi-CoS in 4G/LTE backhaul applications. As an example, MEF 23.1 supports the enhanced synchronization capabilities that 4G/LTE networks will require. It also addresses such elements as service mapping, link and service OAM, and resiliency.“Mobile operators all agree that the industry’s single biggest challenge and operating cost is in delivering the bandwidth needed for 4G/LTE backhaul,” says MEF President Nan Chen. “It’s important to take a holistic approach, so for the first time, the MEF introduces its Mobile Backhaul Initiative with an integrated suite consisting of the MEF 22.1 Mobile Backhaul implementation agreement, MEF 23.1 Multi-CoS implementation agreement, and a technical business paper clarifying the urgency and justification of migrating to Multi-CoS if cost-effective expansion and efficient deployment of 4G/LTE are to be achieved. It also includes other technical guidance on best practices and a new paper on packet-based frequency synchronization.”The MEF believes that most carriers have begun to evolve toward an Ethernet-based approach for mobile backhaul. However, most carriers have adopted an approach based on a single class of service, which means all traffic is treated the same. As networks evolve towards 4G/LTE and must support a wider range of services with different network resource priorities and sensitivity to delay, moving to an architecture that supports multiple CoS will become necessary.Chen provides more detail in a video on the MEF website. Copies of the position paper, as well as other documentation, are available from the same page.“Multi-CoS is a breakthrough in delivering sustainable quality and profitable deployment of mobile services, because it allows highly efficient bandwidth usage – with less dependency on over-provisioning, combined with more responsive QoS delivered to more users,” said Nav Chander, senior analyst at IDC. “It delivers significant benefits to both mobile operators and Ethernet access provider partners; and MEF is at the forefront of enabling the onset of a whole new class of mobile value-added services.”
The above information is edited by 10GTEK.
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