Research Interests

I am interested in understanding chaotic systems. I investigate questions concerning the synchronization of chaos, chaos communications, and chaos control.

As part of the research for my dissertation I studied the use of semiconductor lasers with opto-electronic time-delayed feedback for chaos communications. This involved both simulations and building a model analog circuit which was used to study the system.

Another succesful chaos communication scheme is Chaotic Pulse Position Modulation (CPPM) which was demonstrated by communicating over an ~5km free-space turbulent channel.

I am currently working on control of an opto-electronic time-delay system.

Aside from my research using chaotic lasers Matt Kennel and I have been developing a method to control the output pulses of (non-chaotic) semiconductor lasers by 'shaping' the driving current. I was also working with Henry Abarbanel and Matt Kennel on generalized synchronization based methods to test reduced models of physical and biological systems in comparison to the corresponding complex physically based models or to data streams.

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