Wavelength Routing In Fiber-optic Network Communications
Wavelength routing network theory terminology. In a wavelength division multiplexing (WDM) optical network, the connection request between nodes is established by the wavelength of light.
Therefore, the transmission of information is through a transparent optical path without photoelectric conversion. Wavelength routing means that the optical signal is routed according to its wavelength when passing through the network node. The wavelength routing network has two significant advantages:
1. Since the wavelength determines the path of optical signal transmission, a node can simultaneously emit multiple different wavelength signals, each signal reaching a different destination, and the number of destinations is the same as the number of wavelengths that can be generated by this node.
2. Since each signal is confined to a specific wavelength channel, as long as these wavelength channels are not in the same fiber, the wavelengths of these signals can be used simultaneously in other paths of the network, that is, wavelength reuse. Increased wavelength utilization.
In wavelength routing, since there is no wavelength converter in the node, only the same wavelength can be assigned to the route along different routes on one route.
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