WDM-based packet networks

We discuss design considerations for Wavelength Division Multiplexing (WDM) -based packet networks. In the near term, such networks are likely to consi st of WDM links connected using some form of electronic multiplexing. The f ocus of this article is on the joint design of the electronic and optical l ayer with the objective of simplifying the network and reducing the protoco l stack. To that end, we discuss the benefits of optical flow switching, ne twork reconfiguration, traffic grooming, and optical layer protection. We a lso discuss the state of all-optical packet networking with particular focu s on Local Area Network technology.