Ultrafast all-optical true random number generation device

Abstract

An ultrafast all-optical true random number generation device is characterized in that an active mode-locked pulse laser, a pulse optical amplifier, a high nonlinear dispersion shifted fiber and an anomalous dispersion fiber are sequentially arranged in a polarization-preserving fiber to form a super-continuous spectrum entropy source, a pulse sequence outputted by the super-continuous spectrum entropy source is cut by an array waveguide grate to generate N narrow-band sub optical pulse sequences, enters an optical attenuator array and is adjusted, the pulse sequence and a continuous optical signal outputted by a continuous optical laser simultaneously enter an all-optical comparator array through fibers, and the pulse sequence is quantized into a high-speed true random pulse sequence, is filtered by an optical filter array, enters a fiber delay line and finally enters an optical coupler for time division multiplexing to form an ultrafast all-optical true random number sequence. High-speed true random numbers are generated by the aid of time division multiplexing technology for the first time, the requirement for the bandwidth of the entropy source is reduced, the rate reaches Tbps magnitude and is increased by three orders of magnitude as compared with an existing true random number generation rate, and security requirements of modern high-speed secure communication are met.

Description

technical field [0001] The invention relates to an ultra-fast all-optical true random number generator, which belongs to the field of information technology. It is a device for generating an ultra-high code rate true random number sequence, and is mainly used in secure communication and large-scale parallel computing for fast Generate secure and reliable true random numbers or keys. 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 in...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an ultra-fast all-optical true random number generating device to solve the problems such as insufficient code rate commonly existing in the above-mentioned prior ar

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