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    1. Network Design

    Sumitomo Electric introduces fibers tailored for FTTX and access applications

    March 26, 2003
    March 26, 2003--Sumitomo Electric Lightwave, manufacturer of fiber-optic solutions and founding member of the FTTH Council, has introduced what it claims is the industry's first singlemode fibers designed specifically for Fiber-to-the-Home, Fiber-to-the-Desk and general access and enterprise network applications.
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    March 26, 2003--Sumitomo Electric Lightwave, manufacturer of fiber-optic solutions and founding member of the FTTH Council, has introduced what it claims is the industry's first singlemode fibers designed specifically for Fiber-to-the-Home (FTTH), Fiber-to-the-Desk (FTTD) and general access and enterprise network applications. The new singlemode fibers, introduced under the brand names PureAccess and PureAccess-Ultra, feature reduced bend radius capabilities that enabling tighter routing and higher fiber density for component design and deployment of fiber in central offices, subscriber equipment, back-plane solutions, and premise wiring.

    The PureAccess fiber boasts a minimum bend radius of 15mm (0.6 in.), which is less than one-half that of current U.S. industry standards for singlemode fiber, claim company representatives. PureAccess fiber meets ITU-T G.652 standards and is fully compatible with standard singlemode fiber. The new fiber has direct applications in the last segment of FTTH deployments, allowing smaller electronic packages at the consumer's house thanks to its improved bend radius. The PureAccess fibers are manufactured at higher proof test levels to ensure the highest reliability when deployed within the rugged environment encountered in FTTX installations.

    The PureAccess-Ultra fiber has a further reduced minimum bend radius of 7.5mm (0.3 in.). The fiber's low minimum bend radius and high bending reliability resolves complicated premise wiring issues by enabling easy installation within small cabinets, outlets, and termination, switch, or joint boxes, says the company. With low fiber bending loss, optical fiber cord can now be installed easily along a wall, and excess cable lengths can now be handled and stored similar to UTP copper cables.

    "Since Sumitomo has long been involved in the research and development of FTTX technology with major carriers throughout the world, we are well positioned to offer our customers the most reliable and innovative FTTX solutions," contends Bill Beasley, Sumitomo's director of marketing. "By adding PureAccess and PureAccess-Ultra fibers to our latest FTTX innovations, such as our gel-free DriTube ribbon cable, flame-retardant drop cables, and splicing solutions, we are able to give our customers a competitive edge in customer turn-up, time to revenue, and product quality when meeting end-user FTTX demands."
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    Both PureAccess and PureAccess-Ultra have been installed in various FTTH broadband Internet access networks in Asia and are now available in North America.

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