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Path Level Traffic Grooming in WDM Optical Networks
Traffic grooming continues to be a rich area of research in the context of WDM optical networks. Past research studies that focused on improving network utilization required high speed optical cross-connects that could switch at the packet or burst level. Such optical technologies are expensive and hard to fabricate. Recently, there have been some research into designing new architectures focused on optical grooming without using fast...
preview: http://www.amazon.com   date: 9/3/2008

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Survivability and Traffic Grooming in WDM Optical Networks
The advent of fiber optic transmission systems and wavelength division multiplexing has led to a dramatic increase in the usable bandwidth of single fiber systems. This book provides detailed coverage of survivability (dealing with the risk of losing large volumes of traffic data due to a failure of a node or a single fiber span) and traffic grooming (managing the increased complexity of smaller user requests over high capacity data pipes),...
preview: http://www.amazon.com   date: 2/16/2006

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WDM Optical Network Design- Using Limited Traffic Grooming Resources
While a single fiber strand in wavelength division multiplexing (WDM) has over a terabit-per-second bandwidth and a wavelength channel has over a gigabit-per-second transmission speed, the network may still be required to support traffic requests at rates that are lower than the full wavelength capacity. To avoid assigning an entire lightpath to a small request, many researchers have looked at adding traffic grooming to the routing and...
preview: http://www.amazon.com   date: 10/22/2007

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WDM Technologies: Optical Networks
This revolutionary capability is being achieved with technology known as wavelength division multiplexing WDM). WDM technology relies on the fact that optical fibers can carry many wavelengths of light simultaneously without interaction between each wavelength. Thus, a single fiber can carry many separate wavelength signals or channels simultaneously.
preview: http://www.amazon.com   date: 8/16/2004

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Dense Wavelength Division Multiplexing (DWDM) Performance and Conformance Testing
Dense wavelength division multiplexing (DWDM) is a technology that uses multiple lasers to transmit many wavelengths of light simultaneously over a single optical fiber. Each signal is modulated by different source data (text, voice, video, etc.) and travels within its own unique color band (wavelength). DWDM enables the existing fiber infrastructure of the telephone companies and other carriers to be dramatically increased. Vendors have...
preview: http://www.iec.org  

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The Fiber Optic Association - Tech Topics: Wavelength Division Multiplexing (WDM)
Why Is WDM Used? With the exponential growth in communications, caused mainly by the wide acceptance of the Internet, many carriers are finding that their estimates of fiber needs have been highly underestimated. Although most cables included many spare fibers when installed, this growth has used many of them and new capacity is needed. Three methods exist for expanding capacity: 1) installing more cables, 2) increasing system bitrate to...
preview: http://www.thefoa.org  

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Wikipedia: Wavelength-division multiplexing
In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fiber by using different wavelengths (colours) of laser light to carry different signals. This allows for a multiplication in capacity, in addition to enabling bidirectional communications over one strand of fiber. This is a form of frequency division multiplexing (FDM) but is commonly...
preview: http://en.wikipedia.org