Dark-pulse propagation in optical fibers

We report measurements of the reshaping of 0.3-psec dark pulses due to their passage through 10 m of single-mode optical fiber. The measurements were performed as a function of intensity and the observed strong reshaping agrees qualitatively with the predictions of the nonlinear Schrodinger equation which suggest that we have observed the formation of dark-pulse solitons.Peer reviewedElectrical and Computer Engineerin

Observation of the formation of an optical intensity shock and wave breaking in the nonlinear propagation of pulses in optical fibers

We have observed the formation of an optical intensity shock and the subsequent wave breaking in the nonlinear propagation of 1-psec pulses in an optical fiber. The wave breaking manifests itself as the appearance of oscillations trailing the shock, which are due to the beating of widely separated frequency components which bridge the shock. The experimental results are in good agreement with numerical solutions of the nonlinear Schrodinger equation.Peer reviewedElectrical and Computer Engineerin

Subpicosecond electrical pulse generation using photoconductive switches with long carrier lifetimes

Using a new mechanism of electrical pulse generation, we have generated 350 fs (full width at half maximum) electrical pulses on a coplanar transmission line, fabricated on an unimplanted silicon-on-sapphire substrate.Peer reviewedElectrical and Computer Engineerin