Integrated photonics on lithium niobate has been rejuvenated in the last decade, thanks to the development of submicron optical waveguides on thin-film wafers of the material. For example, record-high performance electrooptic modulators and nonlinear wavelength converters on the platform have been maturing and quantum-optic applications are emerging. Progress in thin-film lithium niobate integrated photonics, its future directions, opportunities, and challenges will be presented.
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