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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 3 — Jan. 20, 2008
  • pp: 365–371

Controlling the optical path length in turbid media using differential path-length spectroscopy: fiber diameter dependence

O. P. Kaspers, H. J. C. M. Sterenborg, and A. Amelink  »View Author Affiliations

Applied Optics, Vol. 47, Issue 3, pp. 365-371 (2008)

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We have characterized the path length for the differential path-length spectroscopy (DPS) fiber optic geometry for a wide range of optical properties and for fiber diameters ranging from 200   μm to 1000   μm . Phantom measurements show that the path length is nearly constant for scattering coefficients in the range 5 mm 1 < μ s < 50 mm 1 for all fiber diameters and that the path length is proportional to the fiber diameter. The path length decreases with increasing absorption for all fiber diameters, and this effect is more pronounced for larger fiber diameters. An empirical model is formulated that relates the DPS path length to total absorption for all fiber diameters simultaneously.

© 2008 Optical Society of America

OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(170.7050) Medical optics and biotechnology : Turbid media

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: August 2, 2007
Revised Manuscript: October 18, 2007
Manuscript Accepted: November 15, 2007
Published: January 15, 2008

Virtual Issues
Vol. 3, Iss. 2 Virtual Journal for Biomedical Optics

O. P. Kaspers, H. J. C. M. Sterenborg, and A. Amelink, "Controlling the optical path length in turbid media using differential path-length spectroscopy: fiber diameter dependence," Appl. Opt. 47, 365-371 (2008)

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