Below are some of the WDM technology for reading. Welcome for any comment or visit our site at www.megbold.ca
Wavelength-Division Multiplexing
WDM avoids many of the constraints and implementation difficulties that limit the performance of Time-Division Multiplexing (TDM) systems. Rather than increasing the data rate to handle more information like a TDM system, a WDM system simply carries several optical signals, each at its own wavelength and each respecting the data-rate limitations applicable to the transmission system.
This technique can increase the capacity of existing networks without the need for expensive re-cabling and, thus, can significantly reduce the cost of upgrading a network. It also opens up a new era of marketing flexibility: the transport infrastructure can provide not only cable and fiber for rent, but also individual wavelengths. One wavelength could be used for cable TV, another for telephony, another for internet traffic, another for video-on-demand, four others reserved to a specific customer, eight others rented to five different cstomer, and so on.
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