Optical Loss Control in Lithium Niobate Waveguides via Direct Laser Modification of Covered Titanium Film. - Aleksandr V. Tronev; Mikhail Parfenov; Nikita A. Solomonov; Andrey M. Ionov; Sergey Bozhko; Igor Ilichev; Peter Agruzov; Aleksandr Shamrai (NEW2AN/ruSMART (2), 2020)