Beam propagation analysis of a tapered proton-exchanged lithium niobate optical waveguide

A simulation of tapered lithium niobate optical waveguide fabricated by the proton-exchanged method is presented. The Fresnel equation with an initial input field distribution is solved numerically using the semivectorial-polarized finite difference method and the Runge-Kutta method. The calculated and experimental results are in good agreement.<
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