Title :
Leaky waveguide sensor for bulk refractive index measurements in different media
Author :
Brennan, Des ; Lambkin, Paul ; Galvin, Paul ; Hoffman, Daniel ; Loughran, Michael ; Crean, Gabriel M.
Author_Institution :
Nat. Microelectron. Res. Centre, Cork, Ireland
Abstract :
A sensor capable of small volume refractive index measurements in liquids has been fabricated and tested. The measurement is based on a leaky waveguide device fabricated with Su8 on a pyrex substrate. A microfluidic channel has been integrated directly onto the fluidic sensor wafer. The device monitors the mode coupling angle to the device. The measurement of glycerol content is demonstrated.
Keywords :
microfluidics; optical waveguide components; organic compounds; polymer films; refractive index measurement; Fresnel reflection; bulk refractive index measurement; glycerol; leaky waveguide sensor; liquid refractive index; microfluidic channel; mode coupling angle; small volume refractive index measurement; spin coated Su8 polymer layer; Atom optics; Microfluidics; Optical buffering; Optical propagation; Optical waveguides; Polymers; Refractive index; Resonance; Substrates; Testing;
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
DOI :
10.1109/ICSENS.2004.1426428
