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The efficient generation of surface plasmons from free space optical waves is still an open problem in the field. Here we present a methodology and optimized design for a grating coupler. The photoexcitation of surface plasmons at an Ag-SiO 2 interface is numerically demonstrated to yield greater than 50% coupling from a Gaussian beam into surface plasmon voltages and currents.

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With the rapid increase in size and complexity of analog systems being implemented on field-programmable analog arrays (FPAAs), the need for synthesis tools is becoming a necessity. In this paper, we present Sim2spice, a tool that automatically converts analog signal-processing systems from Simulink designs to a SPICE netlist. This tool is the top level of a complete chain of automation tools. It allows signal-processing engineers to design analog systems at the block level and then implement those systems on a reconfigurable-analog hardware platform in a matter of minutes. We will provide detailed descriptions of each stage of the design process, elaborate on a custom library of analog signal-processing blocks, and demonstrate several examples of systems automatically compiled from Simulink blocks to analog hardware.Index Terms-Field-programmable analog array (FPAA), Simulink, SPICE.