Physical Random Number Generations and Photonic Integrated Circuits for Chaotic Generators

  • Junji OhtsuboEmail author
Part of the Springer Series in Optical Sciences book series (SSOS, volume 111)


The strong demands for increased security in data exchange and communications in optical networks have directed a considerable part of research to physical layer data encryption techniques and, for such purpose, higher bit rates of random number generations have been expected. One of the methods based on the dynamics in semiconductor lasers is the use of chaotic time series to generate ultrafast random bit streams as a physical layer. Optical techniques are not only suitable for high-speed random number generations but also for having the good conformity for data transmission in existing optical channels. In this chapter, the principle and practice of physical random number generations based on chaotic dynamics in semiconductor lasers are discussed. The subjects related to the generations of high quality random bit sequences are also presented. For the implementation of the techniques in real systems, the miniaturization and integration of light sources as chaotic generators are essential to perform stable generations of random number bit sequences. Such systems are also expected as light sources in chaotic secure communications discussed in the preceding chapter. For this aim, deigns, and applications of all optical photonic integrated circuits for chaotic generators are presented. Finally, an application of the systems to random key distributions in quantum cryptographic systems is demonstrated.


Random Number Generation Semiconductor Laser Optical Feedback Chaotic Signal Chaotic Time Series 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Shizuoka UniversityShizuokaJapan

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