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Optical Engineering • Open Access

Frequency noise characteristics of a diode laser and its application to physical random number generation
Author(s): Shinya Maehara; Kohei Kawakami; Hideaki Arai; Kenji Nakano; Kohei Doi; Takashi Sato; Yasuo Ohdaira; Shuichi Sakamoto; Masashi Ohkawa

Paper Abstract

We describe a method of generating physical random numbers by means of a diode laser that has an extremely wide-band frequency-noise profile. Fluctuations in the laser frequency affect the intensity of the light transmitted through the optical frequency discriminator, detected thereafter as random fluctuations. This allows us to simultaneously generate 8 random bit streams, due to the parallel processing of 8-digit binary numbers sampled by an 8-bit analog-to-digital converter. Finally, we generated physical random numbers at a rate of 3  Gbit/s, by combining one data stream with another stream that is delayed by 2 ms, by exclusive-OR.

Paper Details

Date Published: 7 January 2013
PDF: 8 pages
Opt. Eng. 52(1) 014302 doi: 10.1117/1.OE.52.1.014302
Published in: Optical Engineering Volume 52, Issue 1
Show Author Affiliations
Shinya Maehara, Niigata Univ. (Japan)
Kohei Kawakami, Niigata Univ. (Japan)
Hideaki Arai, Niigata Univ. (Japan)
Kenji Nakano, Niigata Univ. (Japan)
Kohei Doi, Niigata Univ. (Japan)
Takashi Sato, Niigata Univ. (Japan)
Yasuo Ohdaira, Niigata Univ. (Japan)
Shuichi Sakamoto, Niigata Univ. (Japan)
Masashi Ohkawa, Niigata Univ. (Japan)

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