Optical Bistability In Integrated Optics: An Extended Model For The Non-Linear Distributed Feedback Device

Annemie Empsten; Irina Veretennicoff

doi:10.1117/12.961394

Abstract

In order to study optical bistability in a non-linear distributed feedback structure (NLDFB), we have generalized previous work. A mono-mode rectangular waveguide is chosen as the basic configuration for the device, although other guides could be considered. The grating, providing the passive feedback mechanism, has a geometry that can be arbitrarily chosen. Linear absorption is taken into account and the non-linearity is taken to be of the Kerr type. The effect of these three perturbations is treated using the Coupled Mode Theory and the Slowly Varying Envelope Approximation, including the radiation modes. Expressions for the coupling constants due to the three fundamental perturbations are derived and we show that new terms arise due to the interplay between the latter. Our model shows that an extra term, causing a shift of the Braggfrequency occurs in the equations. The analytical expressions are integrated numerically with the proper boundary conditions. Overall reflection and transmission properties of the device are displayed as a function of the intensity, the period of the grating, its length and several other device parameters.

Citation Download Citation

Annemie Empsten, Annemie Empsten, Irina Veretennicoff, Irina Veretennicoff, } "Optical Bistability In Integrated Optics: An Extended Model For The Non-Linear Distributed Feedback Device", Proc. SPIE 1127, Nonlinear Optical Materials II, (22 December 1989); doi: 10.1117/12.961394; https://doi.org/10.1117/12.961394

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