Title :
Design of optical biosensor using polymeric waveguide
Author :
Borges, Ben-Hur V. ; De Barros, Luiz Eugenio M, Jr.
Author_Institution :
Dept. de Engenharia Eletrica, Escola de Engenharia Eletrica da USP, Sao Carlos, Brazil
Abstract :
We present a detailed design of an optical biosensor using polymeric waveguides intended for blood glucose concentration measurements. Our proposed device is based on a vertical two-waveguide ARROW structure, simplifying fabrication and avoiding post tuning of sensor parameters. The theoretical analysis based on coupled mode theory and transfer matrix techniques is presented whereby all device dimensions and parameters are calculated. For a 2 cm sensor, output optical power in one guide can swing by approximately 17% depending on glucose concentration. Such results represent a significant improvement in performance when compared with conventional Mach-Zehnder sensors
Keywords :
biomedical measurement; biosensors; blood; coupled mode analysis; optical directional couplers; optical planar waveguides; optical polymers; optical sensors; transfer function matrices; 2 cm; antiresonant Fabry-Perot reflections; blood glucose concentration measurement; coupled mode theory; device dimensions; device parameters; directional coupler topology; optical biosensor design; output optical power; polymeric waveguide; simplified fabrication; transfer matrix; vertical two-waveguide ARROW structure; Biomedical optical imaging; Biosensors; Blood; Optical design; Optical device fabrication; Optical polymers; Optical sensors; Optical waveguide theory; Optical waveguides; Sugar;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.867051
