Fast random bit generation with bandwidth-enhanced chaos in semiconductor lasers

被引：178

作者：

Hirano, Kunihito ^{[1
]}

Yamazaki, Taiki ^{[2
]}

Morikatsu, Shinichiro ^{[2
]}

Okumura, Haruka ^{[2
]}

Aida, Hiroki ^{[2
]}

Uchida, Atsushi ^{[2
]}

Yoshimori, Shigeru ^{[1
]}

Yoshimura, Kazuyuki ^{[3
]}

Harayama, Takahisa ^{[3
]}

Davis, Peter ^{[3
]}

机构：

[1] Takushoku Univ, Dept Elect & Comp Syst, Tokyo 1930985, Japan

[2] Saitama Univ, Dept Informat & Comp Sci, Sakura Ku, Saitama 3388570, Japan

[3] NTT Corp, NTT Commun Sci Labs, Seika, Kyoto 6190237, Japan

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 06期

关键词：

OPTICAL FEEDBACK; SYNCHRONIZATION; INJECTION; NOISE;

D O I：

10.1364/OE.18.005512

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally demonstrate random bit generation using multi-bit samples of bandwidth-enhanced chaos in semiconductor lasers. Chaotic fluctuation of laser output is generated in a semiconductor laser with optical feedback and the chaotic output is injected into a second semiconductor laser to obtain a chaotic intensity signal with bandwidth enhanced up to 16 GHz. The chaotic signal is converted to an 8-bit digital signal by sampling with a digital oscilloscope at 12.5 Giga samples per second (GS/s). Random bits are generated by bitwise exclusive-OR operation on corresponding bits in samples of the chaotic signal and its time-delayed signal. Statistical tests verify the randomness of bit sequences obtained using 1 to 6 bits per sample, corresponding to fast random bit generation rates from 12.5 to 75 Gigabit per second (Gb/s) (= 6 bit x 12.5 GS/s). (C) 2010 Optical Society of America

引用

页码：5512 / 5524

页数：13

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