An optical analog-digital converter comprises a nonlinear optical element having a threshold value for the intensity of an input light and producing a first and a second output light from the input light with the threshold value as a reference. The optical element produces a first output light of intensity...http://www.google.es/patents/US4926177?utm_source=gb-gplus-sharePatente US4926177 - Optical analog-digital converter provided with a nonlinear optical element and an optical feedback system for the output lights of said element
Optical analog-digital converter provided with a nonlinear optical element ...
