Open AccessOptoelectronic or all-optical logic gates using chaotic semiconductor lasers using mutual coupling-feedback
Author(s) -
Shihao Yan
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.050509
Subject(s) - synchronizing , semiconductor laser theory , coupling (piping) , synchronization (alternating current) , optoelectronics , chaotic , physics , laser , diode , logic gate , modulation (music) , optical chaos , computer science , optics , topology (electrical circuits) , materials science , electrical engineering , engineering , algorithm , artificial intelligence , acoustics , metallurgy
We present theoretically the construction of the fundamental gates using two injection semiconductor laser diodes by muans of mutual coupling-feedback. Two laser diodes driven by a common monochromatic light beam run chaos while chaotic synchronization between the two lasers is achieved by coupling-feedback. The optoelectronic logic gate is implemented by appropriately synchronizing or de-synchronizing the two chaotic states by modulating the currents. The all-optical logic gate is finally implemented by appropriately synchronizing or de-synchronizing the two chaotic states via the modulators modulating the coupling lights, which is an external optical modulation method. Numerical results validated the feasibility of the method.