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1 July 2003 Combined fiber optical confocal microscopy for noninvasive optical sensing
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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.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ilko K. Ilev, Ronald W. Waynant, Erik Gorman, Reggie Luedtke, Kimberly R. Byrnes, and Juanita Anders "Combined fiber optical confocal microscopy for noninvasive optical sensing", Proc. SPIE 4957, Optical Fibers and Sensors for Medical Applications III, (1 July 2003); https://doi.org/10.1117/12.488652
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