Open AccessImplementation of 140 Gb/s true random bit generator based on a chaotic photonic integrated circuit
Author(s) -
Apostolos Argyris,
Stavros Deligiannidis,
Evangelos Pikasis,
Adonis Bogris,
Dimitris Syvridis
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.018763
Subject(s) - chaotic , random number generation , broadband , photonics , computer science , robustness (evolution) , optics , electronic engineering , photonic integrated circuit , bit rate , bit field , physics , semiconductor laser theory , laser , algorithm , computer hardware , materials science , drilling , biochemistry , chemistry , artificial intelligence , metallurgy , gene , engineering
In the present work a photonic integrated circuit (PIC) that emits broadband chaotic signals is employed for ultra-fast generation of true random bit sequences. Chaotic dynamics emerge from a DFB laser, accompanied by a monolithic integrated 1-cm long external cavity (EC) that provides controllable optical feedback. The short length minimizes the existence of external cavity modes, so flattened broadband spectra with minimized intrinsic periodicities can emerge. After sampling and quantization--without including optical de-correlation techniques and using most significant bits (MSB) elimination post-processing--truly random bit streams with bit-rates as high as 140 Gb/s can be generated. Finally, the extreme robustness of the random bit generator for adaptive bit-rate operation and for various operating conditions of the PIC is demonstrated.