The invention discloses a method for reversibly regulating and controlling the conductivity of a memristor by using an optical signal. The memristor comprises a bottom electrode layer, a top electrodelayer and an intermediate dielectric layer located between the bottom electrode layer and the top electrode layer. The method comprises: inputting an optical signal through the bottom electrode layeror the top electrode layer, and the method comprises an optical write-in mode for improving the conductivity of the memristor and an optical erase mode for reducing the conductivity of the memristor.In the light writing mode, the light signal is ultraviolet light, visible light or infrared light; in the light erasing mode, the light signal is visible light or infrared light. According to the invention, the pulse time-dependent plasticity of the biological synapse is successfully simulated in an all-optical mode. Compared with traditional electric signal regulation and control, an optical signal has ultrahigh speed and excellent parallelism, continuous reversible regulation is carried out on the memristor conductivity by utilizing an all-optical signal, and the advantages of photonics andelectronics can be well combined together. The memristor regulation and control method provided by the invention has a wide application prospect in the fields of photoelectric calculation and artificial vision.
Method for reversibly regulating and controlling conductivity of memristor by using optical signal