Abstract：A photosensitive chaotic oscillator which can be controlled with light illumination under various control voltage levels is proposed. The oscillator consists of a photodiode for the light input, clock switches and capacitors for the sample and hold function, a nonlinear function that creates an adjustable chaos map, and a voltage shifter that adjusts the output voltage for feedback. After optimizing the photodiode sub-circuit by using an available photodiode model in PC-based simulation program with integrated circuit emphasis to obtain a suitable output, the full chaotic circuit is verified with standard 0.6-μm complementary metal oxide semiconductor parameters. Chaotic dynamics are analyzed as a function of the light intensity under different control voltage levels. The time series, frequency spectra, transitions in state spaces, bifurcation diagrams and the largest Lyapunov exponent are improved.
. [J]. 中国物理快报, 2013, 30(6): 60501-060501.
Van Ha Nguyen, Han Jung Song . Bifurcation Analysis of the Voltage Controlled Photosensitive Chaotic Oscillator. Chin. Phys. Lett., 2013, 30(6): 60501-060501.
2013, Vol. 30 
