SFP Series fiftieth Week News Abstract 7
Week News Abstract For SFP Series in 10GTEK
The abstract is mainly about the optical communication related products,including: FTTH,GPON,EPON,SFPPLC,PTN,ODN,Optical module,Optical devices,optical communications,Optical transceiver module,Etc.
Optical transceivers for 16G Fibre Channel: Improving performance in storage-area networks
Cloud services and storage have exploded in popularity, enabled in part by virtualization technology at the server, the desktop, and in the storage-area network (SAN). For example, the multi-core processors used in today’s servers can manage a large number of data flows, and the memory speed of new storage technology, including solid-state disks (SSDs), can be used to create high-performance data center storage capable of running ever larger transaction-intensive applications.However, the move towards virtualization can reveal interconnect or I/O bottlenecks. While network managers can circumvent such obstacles initially by simply deploying more bandwidth by multiplying host bus adaptors (HBAs) and adding switches, this strategy undoubtedly leads to network complexity and higher management costs.With as much as 86% of server workloads being virtualized by 2018, storage equipment and components must keep pace with the need for I/O bandwidth in the SAN. Fibre Channel (FC) continues to be the dominant protocol used for networking virtualized servers to storage. An accelerating ramp of 8G FC deployment will soon give way to even faster 16G FC in director and top-of-rack storage switches, server HBAs, inter-switch links (ISLs), and FC RAID controllers. The Fibre Channel FC-PI-5 “16G FC” standard completed in 2009 by the INCITS T11.2 Task Group defines the high-speed optical transceivers that will address the I/O bottlenecks that arise with increased channel utilization. These optical transceivers are compliant with small form pluggable (SFP) industry agreements INF-8074i (SFP) and SFF-8431 (SFP+) for mechanical and low-speed electrical specifications. They also are backwards compatible, which provides a simple migration path to better SAN performance. The standard defines 16G FC links that operate at a serial line rate of 14.025 Gbps. Thanks to a change in data encoding from the 8b/10b used in 8G FC to a more efficient 64b/66b, the throughput of a single optical interconnect doubles without the need to double the serial line rate. This more efficient encoding scheme enables the link distances needed in today’s data centers while still permitting the use of relatively inexpensive laser technology (Table 1). The standard defines the use of clock and data recovery (CDR) circuits to ensure good signal integrity and achieve link lengths that meet the physical needs of growing compute and storage installations.
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Oclaro targets 100-Gbps coherent module availability for April 2012
[UPDATED] Oclaro Inc. (NASDAQ: OCLR) has released details of the MI 8000XM, its 100-Gbps coherent module. The company expects to begin shipping the 100-Gbps module in April 2012, which should put it in line with the release dates of competing 100-Gbps coherent modules.[UPDATE] The new MI 8000XM will join the 40-Gbps MI 5000XM within Oclaro’s portfolio of modules that pair dual-polarization quadrature phase-shift keying (DP-QPSK) modulation with coherent receiver technology. The MI 5000XM is currently shipping in volume.[UPDATE} Oclaro has supplied 100-Gbps components on the open market for some time and will leverage this expertise for the MI 8000XM. However, unlike the 40-Gbps MI 5000XM, the new 100-Gbps optical transponder will not use chip technology from ClariPhy Communications, according to Per Hansen, vice president of product marketing for Oclaro's Optical Network Solutions unit. Oclaro invested in ClariPhy in May of last year.Instead, Oclaro’s transponder will use a low-power digital signal processor large-scale integrated (DSP-LSI) circuit from NEL (NTT Electronics Corp.). The DSP-LSI, developed as part of the "R&D on High Speed Optical Transport System Technologies" project, has become the go-to device for 100-Gbps transponders. Oclaro’s competitors Opnext and Fujitsu both have announced that they will use this technology in their 100-Gbps coherent offerings, both of which are expected to reach the market at roughly the same time as Oclaro’s (see “Opnext targets April 2012 for 100G DP-QPSK coherent transponder module production” and “Fujitsu Optical Components announces 100-Gbps DP-QPSK transponder”).[UPDATE] The use of the NEL device instead of a ClariPhy chip might raise an eyebrow, given the fact that Oclaro bought its stake in ClariPhy with 100-Gbps largely in mind (see “Oclaro: ClariPhy deal boosts 100G component and module play”) and uses ClariPhy technology in the 40-Gbps MI 5000XM. Hansen said use of the NEL chip is a case of having silicon with the required performance available in the proper time frame, and should not be construed as "a knock on ClariPhy" or a sign of trouble between the companies. Hansen hinted that ClariPhy might get its turn in the future.But it would also seem that ClariPhy wasn't going to have its device ready in time for an April 2012 launch.Regardless, Oclaro appears happy with what it will deliver. "Following on the success of our 40-Gbps transponders, the 100 Gbps MI 8000XM leverages Oclaro's expertise in module design combined with a deep understanding of high bit rate propagation challenges in optical fiber networks," said Dr. Terry Unter, president and general Manager of the Oclaro Optical Networks Solutions Business Unit. "The MI 8000XM transponder integrates the latest generation DSP with an advanced control and management implementation to deliver state-of-the-art performance in a module that is easy for our customers to integrate into their network equipment."The availability of 100-Gbps modules will mark a new wave of high-speed system design. The first wave consists of proprietary designs created by systems houses using individual components. "Merchant coherent transponders are critical for mass deployment of 100-Gbps DWDM systems," said Ron Kline, principal analyst at Ovum. "We continue to see strong growth of coherent technology for both 40G and 100G applications. The availability of standardized modules will help lower system costs and increase market competitiveness of vendors offering high-capacity bandwidth solutions."
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UC Health goes optical for healthcare network
UC Health of Ohio will link four hospital building, including associated data centers, with a high-speed fiber-optic network. The network will use Ciena Corp.’s 4200 Advanced Services Platform, Ciena (NASDAQ: CIEN) says.The network will support LAN, voice, and video traffic as well as real-time access to such healthcare-related applications as Computerized Physician Order Entry (CPOE), Electronic Health Records (EHR), Picture Archiving and Communications Systems (PACS) and other advanced imaging systems. UC Health hopes to create a virtual computing environment among UC Health data centers with the network as well.“To support the delivery of advanced healthcare applications like medical imaging and EHR, we need a network that is highly reliable, scalable, and robust,” said Mike Kincaid, manager of network services at UC Health, which is affiliated with the University of Cincinnati. “Ciena’s optical transport solutions allow us to improve patient care, staff productivity, and service by increasing our network capacity so that we can deliver critical medical data and files such as high-resolution medical images and patient data.”UC Health expects the network to support a variety of new services. For example, UC Health plans to roll out a mobile application that will support video-conferencing and virtual patient consulting via the Internet.In addition to the 4200 system, Ciena also will provide such services as network design, site engineering, installation, and service provisioning.
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