Analysis of Fiber Optic Sensor Embedded in Metals by Automatic and Manual TIG Welding

In this paper, the embedding of fiber optic sensors in metals, by using both automatic and manual tungsten inert gas welding (TIG) is discussed for nickel- and copper-coated fiber Bragg gratings (FBG) written into an optical fiber, as embedding such sensors in metals provides protection against environmental effects. In the investigation and analysis of the performance of a number of such sensors,...