A True Random Code Photonic Integrated Chip

Abstract

Disclosed is a true random code photonic integrated chip. A laser emitted by one of quarter wavelength phase shift distributed feedback laser devices is subjected to phase modulation through a phase modulation area, so that the laser is injected into the other quarter wavelength phase shift distributed feedback laser device under the appropriate phase condition, the quarter wavelength phase shiftdistributed feedback laser devices constitute a main laser device, and a chaotic laser is generated when the laser is injected into the other laser device; after the chaotic laser passes through a saturable absorber area, a laser pulse with the random fluctuating amplitude is generated, passes through the second phase modulation area to be subjected to phase modulation and then is subjected to gain amplification; the amplified random laser pulse enters a distributed feedback laser device, and the distributed feedback laser device serve as a light comparator to conduct single-bit all-optical comparison on the random fluctuating laser pulse; when the laser power of the random pulse is higher than a comparison threshold value P, light output does not exist, the laser power is judged as the logic value '0'; and when the laser power of the pulse is lower than the comparison threshold value P, laser output exists, the laser power is judged as the logic value '1', the compared randomlaser pulse passes through a phase modulator and then enters a grating filter to filter out a light waveband lased out by a comparison laser device, and true random codes are generated in real time.

Description

technical field [0001] The invention relates to a true random code photon integrated chip, in particular to a photon integrated chip that can be used for information security and [0002] A true random code photonic integrated chip for encrypted communication, which belongs to the fields of cryptography, optical communication, information security and so on. [0003] technical background [0004] Random codes are widely used in the field of secure communication. The generation of safe and reliable random codes is related to many aspects such as national defense security, financial stability, commercial confidentiality, and personal privacy. [0005] Random codes can be divided into true random codes and pseudo-random codes. Random codes can be quickly generated through algorithms, but they are periodic and can be cracked. Random code, so that information can be fundamentally prevented from being stolen to ensure the security of communication. [0006] Most of the current tr...

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Problems solved by technology

[0008] In order to solve the relevant problems mentioned in the technical background, the present invention discloses a true random code photonic integrated chip, which is used to solve the insufficient code rate of the electronic random code chip and the complex structure of the true random code generator based on chaotic laser, which cannot be integrated The problem

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