[OPTICAL REVIEW Vol. 4, No. 1A (1997) 85-88]
Capillary Waveguide Optrodes for Medical Applications
Dietmar KIESLINGER, Bernhard H. WEIGL, Sonja DRAXLER and Max E. LIPPITSCH
Karl-Franzens-University Graz, InstitutifE Experimentalphysik, Universitysplatz 5, A-8010 Graz, Austria
(Received June 28, 1996; Accepted September 9, 1996)
Glass capillaries with a chemically sensitive coating on the inner surface are used as optical sensors for medical diagnostics. The capillary simultaneously serves as a sample compartment, a sensor element, and an inhomogeneous optical waveguide. Different optical setups have been investigated and compared regarding its waveguiding properties.
Key words : capillary, optical waveguide, blood gases, electrolytes