INTERPLAY OF GRATING AND NONLINEARITY IN MODE-COUPLING

The effect of a uniform grating on the evolution of the orthogonal pol arization modes in a nonlinear birefringent waveguide is examined for the first time to our knowledge. The problem involves the interplay of the linear coupling that is due to the grating, the Linear birefringe nce, and the nonlinear made coupling. After examining the basic formul ation and methods of solution, we present a series of results demonstr ating a variety of nonlinear phenomena, such as bistability. Other two -mode systems are predicted to behave in a similar way. The possible i mplementation of three logic gates from one device configuration is di scussed.