Planar immunosensors with the application of grating couplers: analysis and design

Abstract

The paper involves the application of input grating couplers for biochemical measurements. Surface relief grating with 1000 line/mm on planar SiO2:TiO2 waveguides were fabricated by combination of a dip-coating method (sol-gel) with an embossing technique. The paper presents the results of experimental research on the produced grating couplers and the results of theoretical analysis of the sensor structure.