It's unanimous. All-optical switches will sit at the foundation in the
infrastructure of the next-generation service provider. They're fast. They can be deployed quickly. They're simple to manage. And because of a variety of
environmental considerations, all-optical switches are more suitable for building the optical Internet than electrical-switching architectures. All of these factors point to the emergence of all-optical switching in the metropolitan-network core, as service providers evolve their infrastructures to exploit the revenue opportunities of more sophisticated applications and services.
But for the full potential of this paradigm shift in optical networking to be realized, the network edge must also be re-addressed. The introduction of Internet Protocol (IP) over WDM at the network edge will be a critical step toward the all-optical network.
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