High Speed Chaos in Optical Feedback System with Flexible Timescales

Details High Speed Chaos in Optical Feedback System with Flexible Timescales High Speed Chaos in Optical Feedback System with Flexible Timescales

2003-11-20

arxiv.org/abs/nlin/0311044v1

Nonlinear Sciences

Chaotic Dynamics

7 pages, 6 figures, to be published in IEEE J. Quantum Electron

Scientific paper

10.1109/JQE.2003.823021

We describe a new opto-electronic device with time-delayed feedback that uses a Mach-Zehnder interferometer as passive nonlinearity and a semiconductor laser as a current-to-optical-frequency converter. Bandlimited feedback allows tuning of the characteristic time scales of both the periodic and high dimensional chaotic oscillations that can be generated with the device. Our implementation of the device produces oscillations in the frequency range of tens to hundreds of MHz. We develop a model and use it to explore the experimentally observed Andronov-Hopf bifurcation of the steady state and to estimate the dimension of the chaotic attractor.

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