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We derive the equations that govern the phase noise at steady state in two coupled oscillators with delay. This simple model is then applied to the dual-injection-locked opto-electronic oscillator (DIL-OEO). This model is an extension of the Yao-Maleki model from one OEO loop to two, and it is complementary to other work on full simulations and experiments that we have carried out. We use this model...
We demonstrate a new method based on inverse scattering theory for designing the refractive index profile of single-mode planar waveguides in order to obtain a desired TE-mode profile. The method enables a direct design of the waveguide profile without the need for iterative optimization algorithms. The design is based on a first order solution to the Gel'fand-Levitan-MarCcaronenko integral equation...
We propose a method of analytically characterizing processor performance as a function of circuit latencies. In our approach, we modify traditional simulation to use variables instead of fixed latencies for the internal functional units. The simulation engine then algebraically computes execution times, and the result is a mathematical equation which characterizes the performance space across numerous...
A pseudo-continuous time (PCT) approach to Quantitative Feedback Theory (QFT) design of discrete robust controllers for highly coupled nonlinear plants was developed and experimentally evaluated on a robotic manipulator [2]. The new method provides a straightforward extension of analog QFT techniques to highly coupled nonlinear plants without degrading the robustness of the resulting QFT controller...
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