40G QSFP+ AOC has been introduced Few days ago,Today we are going to introduce Fiberstore’s QSFP+ (Quad Small Form-factor Pluggable Plus) PSM4 (Parallel Single Mode Quad) Active Optical Cables (AOCs) which use a Silicon Photonics (SiPh) optical engine and use lower cost singlemode fiber for transmission distances up to 4km. QSFP+ cables are used for 40GBASE and Infniband standards, to maximize performance.Whether QSFP+ PSM4 AOC and 40G QSFP+ AOC, is one of the Direct Attach Cable.
ADVANTAGES OF SIPH-BASED PSM4 SOLUTION FOR 4-KM REACH
Multiple forces are driving the implementation of PSM4 and SiPh in next generation data-center designs and architectures. PSM4 and SiPh fill an important gap in data-center interconnect options, the gap between the reach of 25G multimode options and that of Long Range (LR) optical approaches. Using pigtail designs with these technologies can ease implementation via easy mating to structured cabling. From a futureproofing perspective, PSM4 is an approach that can accommodate both current and future bandwidth upgrades. A SiPh-based PSM4 approach helps resolve the multiple challenges of higher bandwidth, longer distances, low power, and futureproofing. SiPh-based LR PSM4 products offer seven primary advantages.
Distance: With transmission distances up to 4 km, they can accommodate most, if not all, new data-center requirements. Power: SiPh-based AOCs use basically the same power consumption as VCSEL-based products: under 1 W for a 10G QSFP+ AOC and 1.5 W at 25 Gbps. Cost: The cost is roughly the same as VCSEL-based AOCs, but since they are single mode (SM), they use much less expensive SM cable. As speeds increase, VCSEL-based products require ever more expensive types of fiber. After most networks have upgraded to OM3, an upgrade to OM4 can be costly. And what comes after OM4, and how soon will it be needed? With SM SiPh AOCs, the fiber remains inexpensive SM and stays consistent as data rates increase. Futureproof Structured Cabling: Upgrading structured cabling is less economically viable as speeds continue to increase. PSM4 can accommodate 10 GbE, 40 GbE, 4x10 Gbps aggregated QDR Infiniband, 4x14 Gbps FDR Infiniband, 100 GbE, 4x25 Gbps aggregated. Pigtail Plug-in Options for Ease of Installation and Upgrades: PSM4 AOCs are available in pigtail versions. Here, one end is a traditional QSFP+ active interface and the other either MPO or LC connectors. This enables a quick connection to structured cabling (so the AOC side doesn't have to be pulled long distances) and the ability to quickly upgrade as needed with no costly structured cabling upgrade and associated data-center downtime. SiPh Actives Becoming Broadly Available: An ecosystem of proven, reliable, cost-effective SiPh devices exists to accommodate SM data-center links. SiPh is widely deployed today in PSM4 AOCs, and several new entrants into the market are offering a variety of options. SiPh Offers a Path Beyond 25G: VCSELs face increasing challenges as speeds increase. With SiPh-based systems, most modulating schemes have a clear and well-understood technology path to 50G, 100G, and beyond.
SM SiPh bridges the gaps caused by the dual requirements of longer distances and higher data transmission speeds. With a broad base of products both available and being developed by multiple suppliers, PSM4 and SiPh AOCs can be deployed today to enable new data-center architectures, with the assurance that they'll provide a path to cost-effectively meet future upgrade requirements.
Fiberstore offers 40GBASE QSFP+ to QSFP+ active optical cables with lengths of 10m to 100m.Lengths and compatible brands can be customized up to customers' requirements.So,if you or your friends want to buy qsfp 4x10g aocs, Fiberstore could be your first choice!
Article source:http://www.fiberstore.com/QSFP+-PSM4-Active-Optical-Cables-Tutorial-aid-402.html
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