Title :
Separation of mixed chaotic signals in microchip lasers by independent component analysis
Author :
Uchida, Atsushi ; Kuraya, M. ; Yoshimori, S. ; Umeno, Ken
Author_Institution :
Dept. of Electron. & Comput. Syst., Takushoku Univ., Hachioji
Abstract :
We experimentally demonstrated blind source separation of mixed chaotic laser signals by using ICA. We used two Nd:YVO4 microchip solid-state lasers with external modulation as chaotic signal sources. The injection current of a laser diode used for pumping was sinusoidally modulated to obtain chaotic oscillations at a frequency of 3 MHz. The two chaotic signals were independent because they were obtained from the two chaotic lasers with different initial conditions and parameter values.
Keywords :
independent component analysis; neodymium; optical chaos; optical information processing; optical pumping; solid lasers; source separation; YVO4:Nd; chaotic oscillations; chaotic signal source; frequency 3 MHz; independent component analysis; injection current; laser diode pumping; microchip lasers; microchip solid-state lasers; mixed chaotic signal separation; signal modulation; sinusoidally modulated signal; Blind source separation; Chaos; Chaotic communication; Independent component analysis; Laser beams; Microchip lasers; Multiaccess communication; Optical beam splitting; Photodiodes; Pump lasers;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0930-3
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386999
