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UMBC High Performance Computing Facility
Please note that this page is under construction. We are documenting the 240-node cluster maya that will be available in Spring 2014. Currently, the cluster tara is still available. Please see the 2013 Resources Pages under the Resources tab.
Modeling High-Current Photodetectors
Curtis Menyuk, Department of Computer Science and Electrical Engineering
Yue Hu, Department of Computer Science and Electrical Engineering

The nonlinear response of high-current photodetectors plays an important role in limiting the performance of RF-photonic devices. Yet, the physical reasons for this nonlinear response remain poorly understood, and the only comprehensive simulations of this effect were carried out almost a decade ago when the computational tools and computers were far less powerful than they are now. In particular, almost all prior work used a simple one-dimensional model of the photodetector, which ignored the radial dependence of the light beam. We are intending to carry out work in which we solve the drift-diffusion equations, taking into account radial effects for a high-current p-i-n photodetector using finite-difference methods. We will be carrying out this work in collaboration with experimental researchers at the Naval Research Laboratory.