A boundary-defect lattice model now has an exact solution in all coupling regimes, and photonic waveguide arrays experimentally reproduce the predicted exponential, non-exponential, and oscillatory dynamics.
Analytical model for waveguide light propagation and applications
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abstract
We study the polarization properties of elliptical femtosecond-laser-written waveguides arrays. A new analytical model is presented to explain the asymmetry of the spatial transverse profiles of linearly polarized modes in these waveguides. This asymmetry produces a polarization dependent coupling coefficient, between adjacent waveguides, which strongly affects the propagation of light in a lattice. Our analysis explains how this effect can be exploited to tune the final intensity distribution of light propagated through the array, and links the properties of a polarizing beam splitter in integrated optical circuits to the geometry of the waveguides.
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Non-Exponential Decay in Finite Photonic Waveguide Arrays
A boundary-defect lattice model now has an exact solution in all coupling regimes, and photonic waveguide arrays experimentally reproduce the predicted exponential, non-exponential, and oscillatory dynamics.