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Proceedings Paper

Combined fiber optical confocal microscopy for noninvasive optical sensing
Author(s): Ilko K. Ilev; Ronald W. Waynant; Erik Gorman; Reggie Luedtke; Kimberly R. Byrnes; Juanita Anders
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Paper Abstract

A novel and simple noninvasive sensor techniquefor simultaneous measurement of refractinve-index and thickness of both optically transparent and non-transparent media is presented. It is a fiber-optic confocal-microscope-type sensor technique based on either a single-confocal or a combined dual-confocal fiber-optic design. The single-confocal design is a single-fiber, intensity sensing arrangement that provides precise spatial location of the backreflecting sample surfaces and bi-parameter measurements. The combined dual-confocal design includes two independent confocal channels consisting of two identical apertureless fiber-optic-type confocal microscopes constructed by use of a single 2×2 fiber coupler. This sensor arrangement provides direct measurement in absolute unites of refractive-index and thickness of optically transparent and non-transparent media.

Paper Details

Date Published: 1 July 2003
PDF: 6 pages
Proc. SPIE 4957, Optical Fibers and Sensors for Medical Applications III, (1 July 2003); doi: 10.1117/12.488652
Show Author Affiliations
Ilko K. Ilev, Ctr. for Devices and Radiological Health/U.S. Food and Drug Administration (United States)
Ronald W. Waynant, Ctr. for Devices and Radiological Health/U.S. Food and Drug Administration (United States)
Erik Gorman, Ctr. for Devices and Radiological Health/U.S. Food and Drug Administration (United States)
Reggie Luedtke, Marquette Univ. (United States)
Kimberly R. Byrnes, Uniformed Services Univ. of Health and Sciences (United States)
Juanita Anders, Uniformed Services Univ. of Health and Sciences (United States)


Published in SPIE Proceedings Vol. 4957:
Optical Fibers and Sensors for Medical Applications III
Israel Gannot, Editor(s)

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