for ever, and in the present climate, the required capacity of routers is growing
faster than Moore’s law. A large proportion of the energy dissipation in high-
capacity routers occurs in the routing engines. Therefore, considerable energy
dissipation could be saved if it was possible to simplify the routing algorithms.
This is a topic of equal relevance to optical packet switching and to electronic
packet switching, but it is beyond the scope of this chapter.
REFERENCES
[1] G. Sapountzis and M. Katevenis “Benes Switching Fabrics with O(N)-Complexity Internal Back-
pressure,” in Proc. IEEE Workshop on HPSR, Torino, Italy, 2003.
[2] P. A. Perrier and P. R. Prucnal, “Self-clocked optical control of a self-routed photonic switch,”
J. Lightw. Technol.