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POF Market & Technology Assessment Study 2020 Edition
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ROADMs: From the Core to the Edge $3,995.00

ROADMs are systems that allow the very flexible, remote selection of wavelengths transiting a given intermediate node on a fiber network for dropping and/or adding. They allow access to any of the wavelengths going through a node (or, in more limited ROADM implementations, access to a set of the transiting wavelengths) for use of the data on the chosen wavelength and the possibility of adding to, or modifying, the data on that wavelength for transmitting it on to the next node(s). They also allow the interconnection of multiple intersecting networks (multiple-degree nodes) at the optical level, avoiding the expense and complexity of OEO conversions to achieve the interconnection. The device offers the promise of substantial savings in operational costs, and many operational benefits. Now in nearly mid-2008, the ROADM has become a standard part of long-haul networks to be included as a matter of course in any new network and they have become a major update objective for existing networks. They have also become important to metro networks. Now the application that is driving cost savings is the use of low-cost ROADMs on the edge of the network. (See the material on Nistica, particularly, and others in the Systems Vendors' section.) In addition to the maturity of application, ROADMs have also developed a third-generation technology base the wavelength selective switch (WSS) that has quickly become the "gold standard."

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This product was added to our catalog on Wednesday 14 May, 2008.
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