Title :
Fast Random Bit Generation in Optical Domain With Ultrawide Bandwidth Chaotic Laser
Author :
Wang, Yuncai ; Li, Pu ; Zhang, Jianzhong
Author_Institution :
Dept. of Phys. & Optoelectron., Taiyuan Univ. of Technol., Taiyuan, China
Abstract :
We propose a novel scheme of random bit generator which does signal processing in the optical domain. The output of an ultrawide bandwidth chaotic laser is sampled through an electrooptical modulator, then quantized by an all-optical flip-flop, and finally coded into random bit sequences. Simulation results show that 5-Gb/s random bits in the return-to-zero format and with a duty ratio of 1/2 can be generated, which can pass standard statistical tests for randomness after an exclusive-or operation.
Keywords :
chaotic communication; electro-optical modulation; flip-flops; modulation coding; optical chaos; optical communication equipment; optical information processing; optical logic; random codes; random number generation; random processes; random sequences; semiconductor lasers; statistical analysis; bit rate 5 Gbit/s; coding; electrooptical modulator; exclusive-or operation; optical communication; optical domain; optical flip-flop; random bit generation; return-to-zero; signal processing; standard statistical testing; ultrawide bandwidth chaotic laser; Bandwidth; Chaotic communication; Lasers; Logic gates; Modulation; Optical feedback; Chaos; optical communication; semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2080265
