An all-optical true random number generator

Abstract

An ultra-fast all-optical true random number generating device is to sequentially arrange an active mode-locked pulse laser, a pulsed light amplifier, a high nonlinear dispersion-shifted optical fiber, and an anomalous dispersion optical fiber in a polarization-maintaining optical fiber to form a supercontinuum entropy source; The pulse sequence output by the supercontinuum entropy source is cut by the arrayed waveguide grating to generate N narrow-band sub-optical pulse sequences, which enter the optical attenuator array for adjustment, and then the continuous optical signal output by the optical fiber and the continuous optical laser enters the all-optical at the same time. The comparator array is quantized into a high-speed true random pulse sequence, which is filtered out by the optical filter array, then enters the fiber delay line array, and finally enters the optical coupler for time division multiplexing to form an ultrafast all-optical true random number sequence. The present invention adopts time-division multiplexing technology to generate high-speed true random numbers for the first time, which reduces the requirement on entropy source bandwidth, and its rate reaches the Tbps level, which is 3 orders of magnitude higher than the existing true random number generation rate, and meets modern high-speed security Communication security needs.

Description

technical field [0001] The invention relates to an all-optical true random number generating device, which belongs to the field of information technology. It is a device for generating a super-high code rate true random number sequence, and is mainly used in secure communication and large-scale parallel computing to quickly generate secure A reliable true random number or key. Background technique [0002] Random numbers are widely used in scientific computing such as Monte Carlo simulation, statistical sampling, and artificial neural networks. Especially in the field of secure communication, the generation of safe and reliable random numbers, also known as keys, is related to national defense security, financial stability, commercial confidentiality, personal privacy and many other aspects. [0003] In secure communication, random numbers are generally used as keys to encrypt plaintext information. As long as the key is not cracked, the security of the transmitted informat...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an all-optical true random number generating device to solve the problems such as insufficient code rate commonly existing in the above-mentioned prior art, thereby disclosing a technical solution capable of generating a super-high code rate true random number sequence, The device is suitable for modern secure communication and large-scale parallel computing and other fields

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