A spiral multiplexing integrated metasurface element, real-time optical encryption method and system

Abstract

The invention relates to a spiral multiplexing integrated metasurface element, a real-time optical encryption method and a real-time optical encryption system. The method comprises the steps that a password information table is formulated, the password information table is determined by a sender and a receiver in advance, and the password information table comprises codes, holographic geometric images and corresponding information; obtaining a micro-printing color image, wherein the micro-printing color image is edited and determined by the sender; encoding a secret key formed by combining a light source and a polarization direction into the micro-printing color image to obtain an encrypted micro-printing color image; adding the encrypted micro-printing color image into a resonant cavity based on a spiral multiplexing integrated metasurface element; scanning the encrypted micro-printing color image through electronic equipment to obtain holographic geometric image information and codedinformation; and reading corresponding information in the password information table according to the holographic geometric image information and the coded information to obtain decrypted information. According to the invention, a real-time encryption effect can be realized.

Description

technical field [0001] The invention relates to the field of micro-nano optics and optical encryption, in particular to a spiral multiplexing integrated metasurface element, a real-time optical encryption method and system. Background technique [0002] Optical encryption has the characteristics of multi-channel, high complexity and artistry, and has become one of the important means of modern information security. Information encryption and anti-counterfeiting technology is an important part of today's information security field. Optical encryption technology has proposed a unique strategy for the development of information security field, ensuring the multi-dimensionality, complexity, artistry and integrity of information. Compared with traditional optical encryption methods, encryption devices based on micro / nano optics have many irreplaceable advantages such as large storage capacity, small size, strong diversity and integration capabilities. Among various micro / nano-op...

AI Technical Summary

Problems solved by technology

However, despite the increase in encrypted size brought about by the combination of holography and miniaturization, crosstalk between different channels is still a thorny issue, and once the device is fabricated, it cannot be repeated between the sender and receiver.

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