Abstract

Recently, the nonlinear directional couplers have been extensively investigated as optical devices for ultra high-speed data processing [1-7]. They were analyzed for parallel waveguides [2-5] as well as for configuration with bending waveguides [5-6], which is more insensitive with respect to fabrication tolerances of the device length. In most of previously analyzed nonlinear directional couplers there was assumed the symmetrical distribution of nonlinearity. However, it has been shown that for asymmetrically placed nonlinear material the required switching power is lower than for symmetrical case [7].

© 1991 Optical Society of America