Paper Report

How They Do It with the Defects and What Are the Results



How They Do It with the Defects and What Are the Results

The sol-gel method, based on wet chemistry processing, is quite cheap and simple for the fabrication of multicomponent planar waveguides, where significant rare-earth (RE) ion concentrations, in particular Er3+, can be achieved. Among different binary systems, SiO2-TiO2 has been extensively employed as a host material for Er3+ ions mainly because it offers the possibility of producing planar waveguides with a significant refractive index contrast, depending on the TiO2/SiO2 ratio. SiO2-HfO2 has also been shown to be ...