Fast Random Number Generation With Bandwidth-Enhanced Chaotic Semiconductor Lasers at 8 \,\times\, 50 Gb/s

We propose a scheme for fast random number generation with bandwidth-enhanced chaotic semiconductor lasers. Chaotic laser intensity output and its time-delayed signal are sampled at 50 GigaSample per second and converted into eight-bit values. The order of the eight-bit samples of the time-delayed s...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 24; no. 12; pp. 1042 - 1044
Main Authors Akizawa, Y., Yamazaki, T., Uchida, A., Harayama, T., Sunada, S., Arai, K., Yoshimura, K., Davis, P.
Format Journal Article
LanguageEnglish
Published IEEE 15.06.2012
Subjects
Bandwidth
Bandwidth enhancement
chaos
Distributed feedback devices
Generators
Laser feedback
Optical feedback
random number generation
semiconductor laser
Semiconductor lasers
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Summary:We propose a scheme for fast random number generation with bandwidth-enhanced chaotic semiconductor lasers. Chaotic laser intensity output and its time-delayed signal are sampled at 50 GigaSample per second and converted into eight-bit values. The order of the eight-bit samples of the time-delayed signal is reversed, and bitwise exclusive-or operation is executed between the bit-order-reversed samples and the original eight-bit samples. With this method, it is not necessary to eliminate any of the bits in eight-bit samples in order to obtain good-quality random bit sequences. The equivalent generation rate of 8×50 Gb/s is achieved in an experiment using bandwidth-enhanced chaotic semiconductor lasers.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2193388