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Proceedings Paper

IR spectroscopy: new results due to fiber optic sensing in view of biomedical application
Author(s): Uwe Bindig; Martina Meinke; Ingo H. Gersonde; Oded Spector; Abraham Katzir; Gerhard J. Mueller
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Paper Abstract

Optical fibers transparent in the mid-infrared (IR) enable absorption measurements in remote location. New techniques will enhance the possibility using IR fibers for measurements in ATR-mode. If the fiber is in contact with a sample that has characteristic absorption lines, the total transmission of the fiber and sample of these lines will decrease. In this way the absorption of a sample can be determined using a non-destructive method. This work has proven the suitability of flattened IR-Fiber as a tool for detection of organic substances. Initial investigations using bio-organic compounds, bio-liquids, tissue in the native and coagulated state, and micro-organisms have already been carried out with a view to bio-medical usage. An experimental set up was based on an FTIR-spectrometer, fiber optic cables and an external detector. A segment of 1.5 cm at the center of the fiber was flattened to approx. 150 micrometers . Transmission spectra of flattened fibers have been compared to those of the cylindrical fibers. Spectral differences were obtained indicating a possible use for the study of thermal damage in tissues.

Paper Details

Date Published: 6 July 2000
PDF: 10 pages
Proc. SPIE 4129, Subsurface Sensing Technologies and Applications II, (6 July 2000); doi: 10.1117/12.390621
Show Author Affiliations
Uwe Bindig, Laser- und Medizin-Technologie Berlin GmbH (Germany)
Martina Meinke, Humboldt-Univ. zu Berlin (Germany)
Ingo H. Gersonde, Laser- und Medizin-Technologie Berlin GmbH (Germany)
Oded Spector, Tel Aviv Univ. (Israel)
Abraham Katzir, Tel Aviv Univ. (Israel)
Gerhard J. Mueller, Laser- und Medizin Technologie Berlin GmbH and Freie Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 4129:
Subsurface Sensing Technologies and Applications II
Cam Nguyen, Editor(s)

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