Title :
Femtosecond all-optical switching in a lithium niobate directional coupler with cascaded nonlinearity
Author :
Schiek, R. ; Elflein, W. ; Pertsch, T. ; Tunnermann, A. ; Parameswaran, K.R. ; Fejer, M.M.
Author_Institution :
Electrophys. Dept., Tech. Univ. Munchen, Germany
Abstract :
We observed all-optical switching with femtosecond pulses in periodically-poled lithium niobate waveguide couplers. The contrast of the second-order nonlinear switching process was increased in waveguides with engineered nonuniformity of the wave-vector mismatch.
Keywords :
dielectric polarisation; diffraction gratings; optical couplers; optical harmonic generation; optical materials; optical phase matching; optical switches; vectors; LiNbO/sub 3/; LiNbO/sub 3/ optical directional coupler; cascaded nonlinearity; engineered nonuniformity; femtosecond all-optical switching; femtosecond pulses; periodically-poled; second-order nonlinear switching process; wave-vector mismatch; Directional couplers; Frequency conversion; Gratings; Lithium niobate; Nonlinear optics; Optical frequency conversion; Optical pulse shaping; Optical waveguides; Pulse amplifiers; Ultrafast optics;
Conference_Titel :
Nonlinear Optics: Materials, Fundamentals, and Applications, 2000. Technical Digest
Conference_Location :
Kaua´i-Lihue, HI, USA
Print_ISBN :
1-55752-646-X
DOI :
10.1109/NLO.2000.883612