Integrated planar optical waveguide system with diamond-like carbon film as a sensing layer

Integrated optical waveguide system for sensing purposes is presented. Possibility of using diamond-like (DLC) film as a part of intensity based optical waveguide sensing system has been investigated. Integrated structure includes planar optical waveguide obtained by ion-exchange method in soda-lime glass, joined photodiode and DLC film as a sensing part. Technological problems were also raised. Photocurrent alterations could be good adhesion under influence of various mediums. Obtained film DLC can be characterized by good adhesion and stability even under hundreds of substance dosing procedures. Possible system's upgrades are discussed. (author)