Abstract

Much progress has been made in the studies of nonlinear guided waves exhibiting ultrafast all-optical switching and self-routing characteristics for future telecommunication networks [1]. Spatial attention has been focused on the nonlinear directional couplers (NLDC)[2] and two mode interference (TMI)³ couplers such as zero-gap nonlinear directional couplers or nonlinear X junctions. However, the NLDC is rather sensitive to the structural parameters as well as the wavelength and the intensity of the incident light [2], and the TMI coupler has a branching angle normally smaller than one degree [3].

© 1996 Optical Society of America