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Determination of Phase Noise Spectra in Optoelectronic Microwave Oscillators: a Langevin Approach

Chembo Kouomou, Yanne; Volyanskiy, Kirill; Larger, Laurent; Rubiola, Enrico; Colet, Pere
IEEE Journal of Quantum Electronics 45, 178-186 (2009)

We introduce a stochastic model for the determination of phase noise in optoelectronic oscillators. After a short overview of the main results for the phase diffusion approach in autonomous oscillators, an extension is proposed for the case of optoelectronic oscillators where the microwave is a limit-cycle originated from a bifurcation induced by nonlinearity and time delay. This Langevin approach based on stochastic calculus is also successfully confronted with experimental measurements.