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Optical Waveguides in Crystals Fabricated by Femtosecond Laser Writing: Recent Advances and Perspectives

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Crystalline waveguides well combine the excellent optical confinement of waveguide structures and the rich optical properties of crystalline materials, rendering them promising candidates for waveguide devices and integrated photonic components. Femtosecond-laser-direct writing (FsLDW), as a true three-dimensional (3D) micromachining and microfabrication technology, allows rapid prototyping of on-demand waveguide geometries buried in transparent materials via localized material modification. This presentation summarizes the recent advances of FsLDW fabrication of waveguide devices in dielectric crystals and provides perspectives for potential future directions on this topic.

© 2022 IEEE

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