Optical Communication
One interesting possibility would be to eliminate the front side bus. Modern vertical laser diodes enable this change. In theory, an optical computer's components could directly connect through a holographic or phased open-air switching system. This would provide a large increase in effective speed and design flexibility, and a large reduction in cost. Since a computer's connectors are also its most likely failure point, a busless system might be more reliable, as well.
In addition, current (2010) modern processors use 64- or 128-bit logic. Wavelength superposition could allow for data lanes and logic many orders of magnitude higher, without additional space or copper wires.
Read more about this topic: History Of General Purpose CPUs, 1990 To Today: Looking Forward
Famous quotes containing the word optical:
“It is said that a carpenter building a summer hotel here ... declared that one very clear day he picked out a ship coming into Portland Harbor and could distinctly see that its cargo was West Indian rum. A county historian avers that it was probably an optical delusion, the result of looking so often through a glass in common use in those days.”
—For the State of New Hampshire, U.S. public relief program (1935-1943)