2010年3月
Fast random bit generation with bandwidth-enhanced chaos in semiconductor lasers
OPTICS EXPRESS
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- 巻
- 18
- 号
- 6
- 開始ページ
- 5512
- 終了ページ
- 5524
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OE.18.005512
- 出版者・発行元
- OPTICAL SOC AMER
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
- リンク情報
- ID情報
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- DOI : 10.1364/OE.18.005512
- ISSN : 1094-4087
- Web of Science ID : WOS:000276002500019