Fast random bit generation with bandwidthenhanced chaos in semiconductor lasers

Kunihito Hirano; Taiki Yamazaki; Shinichiro Morikatsu; Haruka Okumura; Hiroki Aida; Atsushi Uchida; Shigeru Yoshimori; Kazuyuki Yoshimura; Takahisa Harayama; Peter Davis

doi:10.1364/OE.18.005512

Fast random bit generation with bandwidthenhanced chaos in semiconductor lasers

Kunihito Hirano, Taiki Yamazaki, Shinichiro Morikatsu, Haruka Okumura, Hiroki Aida, Atsushi Uchida^*, Shigeru Yoshimori, Kazuyuki Yoshimura, Takahisa Harayama, Peter Davis

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

172 Citations (Scopus)

Abstract

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).

Original language	English
Pages (from-to)	5512-5524
Number of pages	13
Journal	Optics Express
Volume	18
Issue number	6
DOIs	https://doi.org/10.1364/OE.18.005512
Publication status	Published - 2010 Mar 15
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Fast random bit generation with bandwidthenhanced chaos in semiconductor lasers",

abstract = "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).",

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AU - Hirano, Kunihito

AU - Yamazaki, Taiki

AU - Morikatsu, Shinichiro

AU - Okumura, Haruka

AU - Aida, Hiroki

AU - Uchida, Atsushi

AU - Yoshimori, Shigeru

AU - Yoshimura, Kazuyuki

AU - Harayama, Takahisa

AU - Davis, Peter

PY - 2010/3/15

Y1 - 2010/3/15

N2 - 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).

AB - 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).

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Fast random bit generation with bandwidthenhanced chaos in semiconductor lasers

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