The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2022
Filed:
Jul. 30, 2020
University of Electronic Science and Technology of China, Chengdu, CN;
Ning Jiang, Chengdu, CN;
Kun Qiu, Chengdu, CN;
Anke Zhao, Chengdu, CN;
Shiqin Liu, Chengdu, CN;
Yiqun Zhang, Chengdu, CN;
UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA, Chengdu, CN;
Abstract
A key distribution method based on broadband physical random sources includes: utilizing a driving semiconductor laser to generate an optical signal, passing the optical signal through a phase modulator driven by a random signal and then equally dividing the phase-modulated optical signal into two identical paths, injecting the two identical paths into slave semiconductor lasers at both communication parties Alice and Bob's sides, respectively, to generate initial synchronized signals, using the generated initial synchronized signals as driving signals to phase-modulate optical signals generated by continuous-wave (CW) light sources, and inputting the modulated optical signals to dispersion modules; wherein after the modulated CW optical signals pass through the dispersion modules, two synchronized broadband noise-like random signals are generated, and then high-speed synchronized keys are generated by a post-processing method.