College of Electronics and Information Engineering Sichuan University Chengdu 610064 China;
Key Lab of Optical Fiber Sensing&Communications University of Electronic Science&Technology of China Chengdu 611731 China;
Key Lab of Optical Fiber Sensing&Communications University of Electronic Science&Technology of China Chengdu 611731 China;
Key Lab of Optical Fiber Sensing&Communications University of Electronic Science&Technology of China Chengdu 611731 China;
Key Lab of Optical Fiber Sensing&Communications University of Electronic Science&Technology of China Chengdu 611731 China;
School of Physics and Electronic Engineering Sichuan Normal University Chengdu 610101 China;
College of Electronics and Information Engineering Sichuan University Chengdu 610064 China;
random fiber laser; Rayleigh scattering; random bit generation; random laser;