Refractive Index Measurement of Fibers Through Fizeau Interferometry

Report No. ARL-TR-6548
Authors: Brian E. Parquette; Daniel J. O'Brien
Date/Pages: August 2013; 24 pages
Abstract: The optical properties of transparent polymer fibers are investigated for use in transparent composite materials using a Fizeau interferometer. Refractive index and thermo-optic measurements are performed for off-the-shelf and internally manufactured fibers. The interferometer is shown to produce accurate, repeatable results for fibers with a cross-sectional area of over 500 μm2. Results show that manufacturing variables can have significant effects on the optical properties of polymer fibers, particularly birefringence.
Distribution: Approved for public release
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Last Update / Reviewed: August 1, 2013