Tbps parallel random number generation based on a single quarter-wavelength-shifted DFB laser

•The quarter-wavelength-shifted DFB laser is firstly reported to generate optical chaos.•Two paths of complex optical chaotic signals with a bandwidth above 10 GHz are simultaneously generated using just one laser diode.•A parallel physical random number generator (Ph-RNG) with a bit rate of 1.04 Tb...

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Bibliographic Details
Published inOptics and laser technology Vol. 162; p. 109273
Main Authors Cai, Qiang, Li, Pu, Shi, Yuechun, Jia, Zhiwei, Ma, Li, Xu, Bingjie, Chen, Xiangfei, Alan Shore, K., Wang, Yuncai
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2023
Subjects
Laser chaos
Physical random number generator
Secure communication
Semiconductor laser
Laser chaos
Secure communication
Physical random number generator
Semiconductor laser
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Summary:•The quarter-wavelength-shifted DFB laser is firstly reported to generate optical chaos.•Two paths of complex optical chaotic signals with a bandwidth above 10 GHz are simultaneously generated using just one laser diode.•A parallel physical random number generator (Ph-RNG) with a bit rate of 1.04 Tbps/channel is realized. We propose and experimentally demonstrate a parallel physical random number generator (Ph-RNG) based on a single quarter-wavelength-shifted distributed feedback laser (QWS-DFB LD). Though simply connecting the two output ports of the QWS-DFB LD to form a cross-coupled perturbation, we simultaneously produce two paths of complex optical chaotic signals with a bandwidth above 10 GHz. Furthermore, a dual-channel Ph-RNG with a bit rate of order terabit per second (Tbps) is implemented by combining a multi-bit extraction method. Final results show that our generated physical random numbers can successfully pass standard benchmark tests for randomness.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2023.109273