Fast Evaluation of RF Power Spectrum of Photodetectors With Windowing Functions

Time window functions are used as broadband excitations to obtain the output power spectrum of photodetectors. Numerical results show a good agreement with experimental results. The proposed method yields a two-orders-of-magnitude reduction in computing time and memory compared to traditional monochromatic calculations. This large reduction makes it possible to design high-performance photodetectors with numerical optimization on desktop computers. We use this approach to design a device whose 3-dB bandwidth is four times larger than the initial design.

Automated summary

Time window functions are used to obtain the output power spectrum of photodetectors. Numerical results agree well with experiments. The proposed method significantly reduces computing time and memory compared to traditional monochromatic calculations, allowing for high-performance photodetector design on desktop computers. Using this approach, a device with a 3-dB bandwidth four times larger than the initial design was successfully designed.