Author:
Rammelt Laura,Engel W. Dieter,Furch Federico J.,Mermillod-Blondin Alexandre
Abstract
We fabricate surface waveguides in a-SiO2 by direct laser writing. These waveguides can be used as refractive index sensors with extinction ratios as high as 5 dB/mm and sensitivities exceeding 1000 dB/RIU at 800 nm.