Synthesis by the Molecular Layering Method and Functional Properties of Metal-Oxide Nanocoatings on the Surface of Quartz Optical Fibers

Abstract

Results obtained in a study of the properties of titanium- and aluminum-oxide nanocoatings synthesized by the method of molecular layering on the surface of quartz optical fibers are presented. It is shown that, as the thickness of a titanium-oxide layer on the edge surface of a light guide increases, a cyclic change is observed in the power reflected from the fiber edge under the action of laser light. Aluminum-oxide nanocoatings on the extended side surface of the sheath of quartz fiber improve its heat resistance and mechanical bending strength. The results made it possible to significantly raise the reliability and extend the functional characteristics of fiber-optic pressure, temperature, and vibration sensors based on modified fibers in their service under extreme conditions.