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Proceedings Paper

Hollow corewaveguides for radiation delivery and sensing: Monte Carlo, ray tracing computer simulation
Author(s): I. Steinberg; E. Kaplan; M. Ben-David; I. Gannot
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Paper Abstract

The use hollow core waveguides (HCW's) in biomedicine includes two different tasks: Power delivery in order to facilitate clinical procedures and measurement of beam parameters in order to sense the surrounding tissue and create a diagnosis. To study the interaction between light and waveguide a computer simulation of ray propagation inside a HCW was developed. The simulation is based on the statistical method of Monte Carlo repeated trials and of ray tracing optics. The simulation accounts for both meridional and skew rays, rough fiber surface, Imperfect reflection, arbitrary fiber geometry and the insertion of absorbing molecular clusters inside the fiber lumen for sensing purposes. Here we test skew rays. At first the effect of skewness on the number of wall hits and the optical distance is investigated. Then different beam profiles are tested to fulfill different tasks: Sensing and power delivery. The role of skew rays in each scenario is discussed.

Paper Details

Date Published: 20 February 2009
PDF: 7 pages
Proc. SPIE 7173, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX, 71730O (20 February 2009); doi: 10.1117/12.815153
Show Author Affiliations
I. Steinberg, Tel Aviv Univ. (Israel)
E. Kaplan, Tel Aviv Univ. (Israel)
M. Ben-David, Tel Aviv Univ. (Israel)
I. Gannot, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 7173:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX
Israel Gannot, Editor(s)

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