AN IMPROVED ANALYSIS OF AN OPTOELECTRONIC MIXER BASED ON METAL-SEMICONDUCTOR-METAL PHOTODETECTOR

摘要

A Fourier-series model for the responsivity of an optoelectronic mixer (OEM) based on a metal-semiconductor-metal photodiode (MSM-PD) is presented. The model is valid over the full useful range of the MSM dc bias voltage. Using this model, closed-form expressions, in terms of the ordinary Bessel functions, are obtained for the conversion loss, the carrier-to-noise ratio and the noise figure.