Title :
Optical bistability and all-optical switching in novel waveguide junctions with localized optical nonlinearity
Author :
Murata, Hiroshi ; Izutsu, Masayuki ; Sueta, Tadasi
Author_Institution :
Graduate Sch. of Eng. Sci., Osaka Univ., Japan
fDate :
5/1/1998 12:00:00 AM
Abstract :
We propose novel all-optical guided-wave devices using the structure with localized third-order optical nonlinearity where only a selected part of a waveguide both in a cross section and along a propagation direction is made from a Kerr-like nonlinear material and the rest are made from linear ones. Optical bistable devices and all-optical switching devices are realizable by utilizing bistable like nonlinear dispersion characteristics in selectively nonlinear guided-wave systems. Optical bistability and all-optical switching characteristics are analyzed in waveguide Y-junctions adopted the scheme by using a modified BPM combined with the normal mode analysis. The method to realize the guided-wave structure with localized nonlinearity is also discussed
Keywords :
optical Kerr effect; optical bistability; optical couplers; optical switches; optical waveguide theory; optical waveguides; Kerr-like nonlinear material; all-optical guided-wave devices; all-optical switching; all-optical switching characteristics; all-optical switching devices; bistable like nonlinear dispersion characteristics; cross section; guided-wave structure; localized nonlinearity; localized optical nonlinearity; localized third-order optical nonlinearity; modified BPM; normal mode analysis; optical bistability; propagation direction; selectively nonlinear guided-wave systems; selectively nonlinear guided-wave systems.; waveguide Y-junctions; waveguide junctions; Nonlinear optical devices; Nonlinear optics; Optical bistability; Optical devices; Optical interferometry; Optical signal processing; Optical surface waves; Optical waveguides; Ultrafast optics; Waveguide junctions;
Journal_Title :
Lightwave Technology, Journal of
