document: Convolution-based global simulation technique for millimeter-wave photodetector and photomixer circuits A fast convolution-based time-domain approach to global photonic-circuit simulation is presented that incorporates a physical device model in the complete detector or mixer circuit . The device used in the demonstration of this technique is a GaAs metal-semiconductor-metal -LRB- MSM -RRB- photodetector that offers a high response speed for the detection and generation of millimeter waves . Global simulation greatly increases the accuracy in evaluating the complete circuit performance because it accounts for the effects of the millimeter-wave embedding circuit . Device and circuit performance are assessed by calculating optical responsivity and bandwidth . Device-only simulations using GaAs MSMs are compared with global simulations that illustrate the strong interdependence between device and external circuit
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