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Proceedings Paper

New system for characterizing the light distribution of optical fiber diffusers for photodynamic therapy applications
Author(s): Rebecca Lynn Kozodoy; James A. Harrington; Scott L. Lundahl
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Paper Abstract

A novel technique for quantitatively examining the 3-D light distribution from optical fiber diffusers was developed. This system provides a rapid and sensitive method for characterizing light output, while remaining easily adaptable to a variety of tip configurations. We have used this technique to evaluate the longitudinal and azimuthal uniformity of the light output from cylindrical diffusing tips as well as the output distributions of spherical and microlens diffusers. Upon considering the clinical requirements of the cylindrical diffuser tips, we have determined a configuration which yields a realistic and informative view of the light output. As an example of the sensitivity and accuracy of this method, the mode-dependence of the output intensity distribution of cylindrical optical fiber diffusers was investigated by examining the effect of bending the fibers. The precision and reproducibility of this characterization scheme allow it to be a valuable tool not only for evaluating existing diffusers, but for assisting in the development of improved fiber optic diffusers.

Paper Details

Date Published: 28 July 1994
PDF: 9 pages
Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994);
Show Author Affiliations
Rebecca Lynn Kozodoy, Rutgers Univ. (United States)
James A. Harrington, Rutgers Univ. (United States)
Scott L. Lundahl, American Cyanamid Co. (United States)

Published in SPIE Proceedings Vol. 2131:
Biomedical Fiber Optic Instrumentation
James A. Harrington; David M. Harris; Abraham Katzir; Fred P. Milanovich, Editor(s)

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