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Silicon waveguides integrated with doped dielectric gain media may allow the design of planar light sources with electronic control. In this paper, the effects of design geometries and nonlinear losses on the gain in crystalline silicon waveguides with erbium-doped regions are investigated. We show that by using multitrench geometries, the power confinement can be increased and higher gain-to-nonlinear-loss...
We investigate the effects of design geometry and nonlinear losses on gain in silicon with erbium-doped regions. Multi-trench designs distribute intensity more uniformly and reduce the nonlinear losses including up conversion and excited state absorptions.
Based on the high nonlinearity of silicon waveguides, a compact frequency-resolved optical gating (FROG) system has been demonstrated using cross-phase modulation for ultrafast pulse characterization. Amplitude and phase of a 700 fs pulse have been measured.
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