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Proceedings Paper

40-Gbps random bit generation by oversampling chaos from an injected semiconductor laser
Author(s): Xiao-Zhou Li; Sze-Chun Chan
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Paper Abstract

Semiconductor lasers in chaotic oscillations have recently been utilized for random bit generation at output rates exceeding gigabits per second, which are important for high-speed numerical simulation, encryption, and communication. Although chaotic signals were successfully invoked though optical feedback into the lasers, the feedbacks inherently led to residual autocorrelation that is detrimental to the output randomness. In this paper, we experimentally demonstrate random bit generation using an optically injected semiconductor laser without feedback. Through oversampling the signal at 10 GHz as recorded by a 2.5-GHz oscilloscope, random bit generation at 40 Gbps is attained from extracting 4 bits per sample.

Paper Details

Date Published: 29 November 2012
PDF: 7 pages
Proc. SPIE 8552, Semiconductor Lasers and Applications V, 85520K (29 November 2012); doi: 10.1117/12.999791
Show Author Affiliations
Xiao-Zhou Li, City Univ. of Hong Kong (Hong Kong, China)
Sze-Chun Chan, City Univ. of Hong Kong (Hong Kong, China)

Published in SPIE Proceedings Vol. 8552:
Semiconductor Lasers and Applications V
Ning Hua Zhu; Jinmin Li; Frank H. Peters; Changyuan Yu, Editor(s)

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