Abstract
In this paper, we establish a lithium niobate (LN) thin film planar waveguide and an annealed proton exchange (APE) waveguide model with serrated array electrodes configuration to deflect and reshape the optical mode. The refractive index profile of the waveguide can be electro-optically manipulated by applying an external voltage into the serrated array electrodes. Through the simulation results, it is observed that different refractive index manipulation of LN waveguide can make the optical beam have different deflection and reshaping. The comparison between the thin film and APE bulk planar waveguide is investigated. When the beam deflection is modulated via the high-speed electro-optic effect of LN, the temporal and spatial beam smoothing can be achieved for the application of high power laser system and other optical signal processing.
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