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17.5 Gbit/s random bit generation using chaotic output signal of mutually coupled semiconductor lasers

Tang Xi Wu Jia-Gui Xia Guang-Qiong Wu Zheng-Mao

17.5 Gbit/s random bit generation using chaotic output signal of mutually coupled semiconductor lasers

Tang Xi, Wu Jia-Gui, Xia Guang-Qiong, Wu Zheng-Mao
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  • Received Date:  19 January 2011
  • Accepted Date:  17 February 2011
  • Published Online:  15 November 2011

17.5 Gbit/s random bit generation using chaotic output signal of mutually coupled semiconductor lasers

  • 1. School of Physics, Southwest University, Chongqing 400715, China

Abstract: Based on two mutually coupled semiconductor lasers linked by fiber, a chaotic seed signal with a 10 GHz ultra-broadband is obtained experimentally. Adopting an 8-bit analog-to-digital converter, the seed signal is converted into a binary bit stream. By an exclusive-OR operation and the most significant bit rejection, a random bit sequence at a rate up to 17.5 Gbit/s, which has passed both the National Institute of Standard and Technology statistical test and the Diehard test, is obtained.

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