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基于数字化带宽增强混沌激光信号的高速随机源

High Speed Random Number Generator Based on Digitizing Bandwidth-Enhanced Chaotic Laser Signal

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摘要

提出并验证了一种基于数字化带宽增强激光混沌信号的高速随机源。为消除光反馈半导体混沌激光信号中存在的弱周期性,将光反馈混沌半导体激光注入另一激光器产生的带宽增强混沌激光信号。用8 bit高速模数转换器对输出的增强带宽混沌激光信号进行采集,实现每个采样点产生多个随机位。为去除所提取原始随机位存在的偏差和提高随机位的产生效率,提出采用基于现场可编程逻辑阵列的安全哈希算法-256来提取随机位。采用4路并行处理技术获得了2.94 Gbit/s 的在线随机数产生速率,每个采样点可平均产生4.65 个随机比特位。所获的随机数通过了随机性测试程序ENT和STS中所有测试项。

Abstract

A high speed random number generator based on digitizing bandwidth-enhanced chaotic laser signal is proposed and demonstrated. In order to remove the weak periodicity in optical feedback chaotic semiconductor laser signal, the optical feedback chaotic semiconductor laser is injected into another semiconductor laser to obtain a bandwidth-enhanced chaotic laser signal. The bandwidth-enhanced chaotic laser signal is converted using an 8-bit high speed analog-to-digital convertor to achieve generating multi bits by each sampling point. In order to remove the bias existing in original extracted random bits and improve the efficiency of random bit generation, fieldprogrammable gate array based secure hash algorithm 256 is proposed to extract random bit. Due to the use of 4-channel parallel processing technology, online random number generation rate of 2.94 Gbit/s is obtained and each sample could produce average 4.65 random bits. The obtained random numbers pass all the tests in random testing program of ENT and STS.

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中图分类号:O436;TN918

DOI:10.3788/cjl201542.1102004

所属栏目:激光物理

基金项目:国家自然科学基金(61007017)、中国博士后科学基金(N2013M540536)、江西省自然科学基金(20142BAB217006,20151BAB202016)、江西省教育厅青年科学基金(GJJ14211)、江西省博士后科研项目择优资助(2014KY18)

收稿日期:2015-04-28

修改稿日期:2015-06-07

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作者单位    点击查看

鄢秋荣:南昌大学信息工程学院, 江西 南昌 330031
曹青山:南昌大学信息工程学院, 江西 南昌 330031
赵宝升:中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室, 陕西 西安 710119
张华:南昌大学信息工程学院, 江西 南昌 330031
廖庆洪:南昌大学信息工程学院, 江西 南昌 330031

联系人作者:鄢秋荣(yanqiurong@ncu.edu.cn)

备注:鄢秋荣(1982—),男,博士后,讲师,主要从事光量子随机源方面的研究。

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引用该论文

Yan Qiurong,Cao Qingshan,Zhao Baosheng,Zhang Hua,Liao Qinghong. High Speed Random Number Generator Based on Digitizing Bandwidth-Enhanced Chaotic Laser Signal[J]. Chinese Journal of Lasers, 2015, 42(11): 1102004

鄢秋荣,曹青山,赵宝升,张华,廖庆洪. 基于数字化带宽增强混沌激光信号的高速随机源[J]. 中国激光, 2015, 42(11): 1102004

被引情况

【1】乔翊,马珺,张建国. 面向混沌光时域反射仪的混沌光源设计. 激光与光电子学进展, 2017, 54(2): 21201--1

【2】王永胜,王云才,郭龑强. 光子集成混沌激光器的研究进展. 激光与光电子学进展, 2017, 54(10): 100005--1

【3】王永胜,赵 彤,王安帮,张明江,王云才. 一种可产生高带宽混沌的外腔半导体激光器的设计及其动态特性. 激光与光电子学进展, 2017, 54(11): 111401--1

【4】魏世海,樊矾,杨杰,黄伟,何远杭,李大双,徐兵杰. 高速小型化光量子随机数发生器. 中国激光, 2018, 45(5): 512001--1

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