Fiberxon promises multi-rate CWDM SFP transceiver
Week News Abstract For Fiber Series in 10GTEK
The abstract is mainly about the optical communication related products,including: SFP,QSFP,FTTH,GPON,EPON,SFPPLC,PTN,ODN,Sfp Transceiver,Optic Transceiver,Optical module,Optical devices,optical communications,Optical transceiver module,Etc.
Fiberxon promises multi-rate CWDM SFP transceiver
This transceiver is designed CWDM application at data rates from 155 Mbits/sec to 2.67 Gbits/sec. It will be available in eight standard CWDM wavelength channels (1470 nm to 1610 nm) and offer a guaranteed minimum optical link budget of 28 dB.The monitoring interface will allow real time measurement of key operation parameters of the transceiver such as optical input and output power, supply voltage, bias current, and module temperature, thus enabling customers to monitor and manage system performance.
Quake launches new chip for 10-GbE SFP+
The rapid growth of data-intensive applications and the broad adoption of Gigabit Ethernet have led to a greater demand for 10-GbE switch ports, uplinks, and server connections. However, despite the demand, 10 GbE still carries a significant price premium over Gigabit Ethernet. SFP+ pluggable optical modules are increasingly recognized as a technology necessary to bring the cost of 10 GbE more in line with that of Gigabit Ethernet."Today, the wholesale cost for a typical XFP module for short-reach 10G Ethernet is approximately $350," reports Mitch Kahn, Quake's vice president of marketing. "Using Quake's new QT2035S and SFP+ technology, the cost of a module for this same reach can be reduced to below $100. At this new price point, 10G Ethernet becomes very compelling for a range of high-volume applications," he says.By reducing silicon in the optical modules to a minimum and through economies of scale between FibreChannel and Ethernet production volumes, the cost of SFP+ modules is significantly lower than larger form factors.In order to facilitate the shift to SFP+, Quake says it has overcome the significant technological challenges associated with signal integrity at 10 Gbits/sec. These challenges require advanced signal-processing capabilities, and Quake's QT2035S is the first silicon device to integrate a standard XAUI-interface 10G Ethernet PHY with complete SFP+ signal processing support, report company representatives."The signal processing problem for SFP+ presents a significant challenge," notes Stan Blakey, Quake's director of product architecture. "For SFP+, the PHY must provide equalization not only for various grades of installed-base fiber, but also for circuit board impairments. The programmable Electronic Dispersion Compensation engine in our QT2035S device is the first solution to provide the performance headroom required in SFP+ applications.""An additional benefit of the EDC performance of the QT2035S is that is allows us to use lower performance transmit optics, such as those for FibreChannel, and run them at 10G," adds Kahn. "The EDC engine compensates for the limited transmitter bandwidth; enabling over time a 10G short-reach SFP+ module with a cost very close to that of a FibreChannel SFP. At around $50, that's a 10x savings over today's technology," he says.Quake demonstrated EDC compensated short-reach optics in conjunction with Picolight at Interop 2006. In the demonstration, a prototype linear 850-nm VCSEL-based SFP+ established an error-free 10-Gbit/sec link over more than a kilometer of multimode fiber."We're excited about the new capabilities enabled by SFP+," asserts Vidya Sharma, vice president of marketing for Picolight. "Smaller form factor, higher density, and lower power consumption advantages offered by SFP+ will greatly accelerate the adoption of 10-GbE in high-performance, high-density data center applications."
Gennum offers CDR-based SFP+ design kits
Moreover, the CDR-based approach to SFP+ designs will now significantly reduce system cost and power consumption, enabling these modules to be used in a variety of high-performance switch applications, such as data centers and storage area networks, say company representatives.Gennum says the new design kits employ its ClearEdge CDR technology, which is used to enhance signal quality within the SFP+ module and improve the robustness of the system, reducing the output jitter by 75% to less than 0.15UI. CDRs ease the performance requirements that are typically placed on application specific integrated circuits (ASICs) interconnected with the modules. For SFP+ limiting links, a CDR-based approach eliminates the need for external line card components, such as electronic dispersion compensation (EDC) chips, saving up to 1W and $40 per port."CDRs allow you to reset the jitter budget within the module and ensure repeatable performance regardless of the type of system the cable or module is plugged into," explains Bharat Tailor, director of marketing, Networking, Storage and Computing, at Gennum. "This enables increased flexibility during system design and eliminates the severe design constraints that can occur as data rates reach 10 Gbps. The use of CDRs in the module or cable assembly lowers the overall cost and power of the end system since lower cost ASIC solutions and materials can be used and longer trace lengths and link lengths can be implemented, without system performance degradation," he notes.Gennum's CDR-based 850-nm SFP+ Optical Module Reference Design Kit is a platform for next-generation SFP+ modules. The company says its SFP+ optical RDK integrates the CDR functionality into existing components within the module and does not increase the component count. By integrating the CDR with a limiting amplifier in the receive path and a VCSEL driver in the transmit path, Gennum is able to maintain a total module power of less than 1W. Implementing the CDR in the receive path of the module provides more design flexibility to have longer traces to the host, to use lower cost PCB material, or to use a lower cost ASIC. By using a CDR in the transmit direction, the transmit eye has a large optical eye mask margin, even with a noisy input to the module.The Optical Module Reference Design Kit also leverages Gennum's GN3150 ROSA and GN4150 TOSA solutions, which are used for optical-to-electrical and electrical-to-optical conversion. These components offer best-in-class sensitivity and ensure exceptional crosstalk performance within the module, claim company representatives.will offer 8.5-Gbps Fibre Channel and 10-Gbps Ethernet versions of both the optical and copper kits. The 8.5-Gbps and 10-Gbps CDRs are pin compatible, so only one design is required for both applications. The kits include the SFP+ module or assembly, Gerber files, schematics, and a design guide.
The above information is edited by 10GTEK.
10GTEK TRANSCEIVERS CO., LTD (Hereinafter refered to as 10GTEK) is specialized in developing and manufacturing Fiber Optical Transceivers and High Performance Cables which are wildly applied in Datacom, Telecom and CATV, providing customers with top quality and cost effective products. Our High Speed Cables cover Passive SFP+ Cable, Active SFP+ Cable, QSFP+ cables, MiniSAS (SFF-8088) Cables, CX4 Cables, Harness cables, Breakout Cables, Patchcords. We also manufacture Fiber Optic Transceivers like 10G XFP, 10G SFP+, SFP DWDM/ CWDM, GBIC, etc. The prompt response and excellent customer support contribute to clients‘ full satisfaction.Today, 10GTEK has been growing fast in the optical field for its unique and competitve excellence which has got a high attention from datacom and telecom.
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