Slot-waveguide Analysis and Fabrication of a Planar Dielectric Waveguide

Abstract

Waveguides are present in many devices for communication, but this work tries to deal with their application in optical biosensing. First, a theoretical treatment is carried out with the objective to describe the demeanour of two biosensor systems, dielectric waveguide biosensor and novel waveguide geometry for enhancing and confining light named slot-waveguide. This last configuration will be explained more widely and analysing the results of different simulations. Finally, planar and rib multimode waveguides on SU8 polymer has been fabricated. Prism coupling has been used as insertion of light and, finally, the number of guided modes has been measured.