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Published online by Cambridge University Press: 21 February 2011
Femtosecond time domain measurements can provide a powerful approach for characterizing both the nonlinear as well as linear optical properties of waveguide devices. We describe a new time division interferometry technique to perform direct measurements of the nonresonant nonlinear index of refraction in AIGaAs waveguides. In addition, femtosecond time of flight measurements permit linear properties such as absorption and dispersion to be characterized using time domain techniques. These techniques permit a comprehensive characterization of linear and nonlinear waveguide properties.