Title :
Optical chaotic AM demodulation by asymptotic synchronization
Author :
Juang, C. ; Hwang, T.M. ; Juang, J. ; Lin, W.W.
Author_Institution :
Dept. of Electron., Ming Hsin Coll., Hsinchu, Taiwan
Abstract :
Synchronization between two identical chaotic systems (drive and response) with different initial conditions can be achieved provided that the conditional Lyapunov exponents are all negative. Adding an AM signal to the drive system, the two systems become asymptotically synchronized. The AM signal can be recovered by utilizing the property of the asymptotic synchronization. Chaotic AM noise is present as a direct result of the chaotic AM demodulation. Signal-to-chaotic-AM-noise ratio is calculated as a function of the signal amplitude.
Keywords :
Lyapunov methods; amplitude modulation; demodulation; laser beams; laser noise; optical chaos; optical modulation; semiconductor lasers; synchronisation; amplitude modulation signal; asymptotic synchronization; chaotic amplitude modulation demodulation; chaotic amplitude modulation noise; conditional Lyapunov exponents; drive; drive system; identical chaotic systems; initial conditions; optical chaotic amplitude modulation demodulation; response; self-pulsating laser diodes; signal amplitude; signal-to-chaotic-amplitude modulation-noise ratio; Absorption; Chaos; Chaotic communication; Demodulation; Diode lasers; Electrons; High speed optical techniques; Mathematics; Nonlinear optics; Optical noise;
Journal_Title :
Photonics Technology Letters, IEEE
