Optical memory circuit.

摘要

An optical memory circuit comprises two photodetectors, and an intermediate signal conductor for connecting the two photodetectors, wherein the two photodetectors and the signal conductor are connected in series in a closed circuit, and the signal conductor has such capacitance that a time constant of a potential of the signal conductor has such a large value as allows charges to be stored in the signal conductor when an optical write signal is incident on one photodetector whereas allows stored charges to be released from the signal conductor when an optical read signal is incident on the other photodetector.