“Device” is a disc 250 nm in diameter that is capable of switching optical pulses at femtosecond rates (femtosecond is a one millionth of one billionth of a second). Credit: Maxim Scherbakov et al
Researchers developed an ultrafast all-optical switch based on nonlinear dielectric silicon nanostructures. The operation of the switching is based on the interaction between 2 femtosecond pulses; at the same time, the undesirable free-carrier effects are suppressed. Ultrafast optical switching will permit to create data transmission and processing devices which will handle speeds high enough to download 1000s of HD-movies/sec.
Photons address the data transmission problem better than electrons...
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