Abstract

An essential feature for any logic gate in an all-optical circuit is cascadibility, ie. the change in output from one device must be of sufficient magnitude to switch the next. We have developed nonlinear interference filters as bistable optical logic gates and have already shown them to be cascadable in simple all-optical digital circuits⁽¹⁾. This paper describes the successful operation of a three-element loop circuit with programmable control of gate bias levels. Such a configuration, extended to arrays of bistable elements, can form the basis of a digital all-optical loop processor.

© 1985 Optical Society of America