Methods of realization of an optical processor with variable operators

On the Physical Limits of Digital Optical Switching and Logic Elements

“…A bistable optical device utilizing a lossless material with a refractive nonlinearity has a switching power that varies as (16) where F is the finesse of the resonator. In the region where the switching time is limited by the resonator, (17) so that the switching energy, defined as the product of the switching power and switching time, is given by p., ex IIF.…”