Cisco Delivers 100G Over 3000 km Without Regeneration
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Cisco delivers 100G over 3000 km without regeneration
Cisco Systems Inc. (NASDAQ: CSCO) says it has successfully demonstrated a coherent 100G DWDM technology with a reach exceeding 3,000 km, without the need for Raman amplification or signal regeneration. This distance is 50% further than any non-Raman alternative product on the market today, the company claims.By eliminating the need for Raman amplification, regeneration, and dispersion compensation, carriers can add 100G services on top of existing infrastructures originally designed for 10G technology, providing better investment protection and simplifying network upgrades, the company says.Cisco says its technology has been tested at a number of service providers and research networks, including US Signal. The performance of the 100G coherent system was also validated by the European Advanced Network Test Center, EANTC.The 100G platform is based on the advanced signal processing technology from Cisco's acquisition of CoreOptics in 2010 (see "Cisco to acquire CoreOptics"). The technology has the ability to scale to 400-Gbps and ultimately up to 1-Tbps rates, the company claims. As a result, networks engineered to meet 100-Gbps requirements will be able to be upgraded to higher data rates without affecting existing network traffic.Cisco says its 100G-capable ONS 15454 MSTP multiservice transport platform (MSTP) can support 42 100G wavelengths in a single bay, nearly three times the density of competing products. The ONS 15454 MSTP is a key component of what Cisco claims is the industry's most comprehensive 100G product portfolio, including the Cisco CRS-3 for the network core, the Cisco ASR 9000 Series for the network edge, and the Nexus 7000 for the data center. Bill Gartner, vice president and general manager of Cisco's optical transport business unit, said, "Service providers around the globe see the need to prepare for the next-generation Internet and facilitate an increasing demand for video, collaboration, and distributed computing. These successful demonstrations are a testament to Cisco's commitment to leading the industry in optical technology, both at 100G and beyond."
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CoAdna TMX 1xN tunable mux/demux commercially available
CoAdna Photonics, Inc. has announced the commercial availability of its TMX 1xN tunable mux/demux products. Designed for colorless optical add/drop applications, including as a drop-in upgrade for existing ROADM systems, the TMX product line has been successfully qualified by multiple customers and is starting to ship in volume, the company says.The 1xN TMX product line uses CoAdna’s proprietary liquid crystal (LC) -based LightFlow technology platform, which CoAdna says has been proven highly reliable and scalable. The port count N is optimized at 16 to achieve the lowest cost/port ratio, the company says.The TMX features hitless wavelength tunability and remote configurability at a power consumption of <1 W. The footprint and electrical interface of the TMX are designed to be identical to those of the wavelength-selective switch (WSS), so as to minimize upgrade efforts, including engineering time and costs for network equipment manufacturers.CoAdna believes the TMX provides a way for its customers to easy upgrade ROADM networks with colorless, directionless, and contentionless capabilities on a pay-as-you-grow business model.“CoAdna’s TMX was first introduced at last year’s OFC; we are proud to see it has qualified for volume deployment now,” said Dr. Jim Yuan, president and CEO of CoAdna. “Practicality and cost-effectiveness are the highlights of this product line. With TMX, carriers now can rapidly integrate additional wavelength flexibility to their existing equipment, simplifying service provisioning. It provides a fast and cost-effective way for carriers to grow their business.”
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Ovum: PON shipments doubled in 2011
Market research and analysis firm Ovum says the market for fixed broadband access equipment saw “exceptional” growth in 2011 for the second consecutive year. Its preliminary assessment of 2011 indicates PON equipment shipments doubled from 2010, annual DSL port shipments surpassed 100 million, and CMTS port shipments crossed the 1 million mark for the first time.According to Ovum’s new Market Share Alert: 4Q11 and 2011 FTTx, DSL, and CMTS, 2011 also saw a shakeup in the ranks of top broadband equipment suppliers. For example, ZTE passed Huawei to take the lead in PON OLT port shipments. Alcatel-Lucent entered the top three and FiberHome the top six in PON ONT/ONUs. Nokia Siemens Networks and ADTRAN improved their DSL rankings to fourth and fifth respectively. In order, Huawei, ZTE, and Alcatel-Lucent were the top three in DSL.“One of the key factors of growth in the year 2010 was a recovery from the downturn in 2009. However, as there was no such catching up needed in 2011, this year’s growth is all the more remarkable and exceeded our expectations,” explained Kamalini Ganguly, network infrastructure analyst at Ovum.PON shipment volumes (OLT ports and ONT/ONU units) reached record numbers, driven, for the second year running, by China. While China Telecom bought the majority of PON equipment until recently, a China Unicom contract drove the market share dynamics in the second half of 2011. Similarly, Mexico and, to a lesser extent, Brazil are driving the dramatic growth of PON in South and Central America.“For many vendors, market share gains still depend on winning customers in key countries. However, it is also true that the customer base for FTTx deployments continues to broaden with an increasing number of participants from incumbents, competitive carriers, governments, utilities and even MSOs,” comments Ganguly.Elsewhere, the DSL market grew by 10% in 2011, driven by the promise of advanced DSL technologies increasing the capacity and reach of DSL ports, as well as FTTN, FTTC, and FTTB upgrades. EMEA was the only regional market to post lower shipments in 2011 compared to 2010. The prospects of the DSL market in 2012 will depend significantly upon a European recovery.Finally, the CMTS market rose by 54% over 2010 and, in a change from the 2010 trend, the share gains were accrued by Arris. However, Cisco still remains the leader in this segment as it has been for years now. Arris's gains for the most part were due to growth in its large US installed base, but all three major CMTS vendors posted growth in international markets.
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