Optical synaptic device based on optical phase change material, adjusting method and optical neural network

• Main Authors: DONG YUNXIAO, MIAO XIANGSHUI, YANG RUI, XIA JIAN
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention discloses an optical synapse device based on an optical phase change material, an adjusting method and an optical neural network, and belongs to the technical field of optical neural networks, the optical synapse device comprises a substrate, a waveguide, a phase change material layer, a heating layer, a covering layer and an electrode acting on the heating layer, and the waveguide, the phase change material layer, the heating layer and the covering layer are sequentially stacked on the substrate. The electrode is used for applying an electric signal to the heating layer to control the temperature of the heating layer, and when light is transmitted in the waveguide, the phase-change material realizes phase modulation under the temperature control of the heating layer to control the output of the light; the solar cell is characterized in that the phase change material of the phase change material layer is a nitrogen-doped Ge2Sb2Te5 phase change material, and the structural general formula of the