Noise-induced turbulence in nonlocally coupled oscillators.

Title Noise-induced turbulence in nonlocally coupled oscillators

Spatiotemporal Chaos in Coupled Oscillator Systems with Global Feedback or External Noise

In this thesis, we mainly study two topics: the first one is chemical turbulence in oscillatory reaction-diffusion systems with global feedback, and the second one is noise-induced turbulence in nonlocally coupled oscillator systems. First topic: A new type of phase transition in chemical turbulence, which is characterized by the emergence of small-amplitude collective oscillations out of the s...

Wave Propagation in Nonlocally Coupled Oscillators with Noise

Unlike conservative oscillatory media, dissipative self-oscillatory media admit traveling waves without decay even in the presence of noise or other sources of randomness. This ability of wave transmission in random self-oscillatory media should be functionally relevant in a variety of living organisms for which randomness is unavoidable. For this type of systems, a critical strength of randomn...

A Phase Noise Reduction Technique in LC Cross-coupled Oscillators with Adjusting Transistors Operating Regions

In this paper, an intuitive analysis of a phase noise reduction technique is done, and then a modified structure is proposed to achieve higher phase noise reduction than the original one. This method reduces the impact of noise sources on the phase noise by decreasing closed-loop gain in zero-crossings points and moving this high closed-loop gain to the non-zero-crossings points. This reduction...

Chimera States in populations of nonlocally coupled chemical oscillators.

Chimera states occur spontaneously in populations of coupled photosensitive chemical oscillators. Experiments and simulations are carried out on nonlocally coupled oscillators, with the coupling strength decreasing exponentially with distance. Chimera states with synchronized oscillators, phase waves, and phase clusters coexisting with unsynchronized oscillators are analyzed. Irregular motion o...