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Proceedings Paper

Light scattering from a fiber of the eccentricity
Author(s): Dahai Li; Huaixin Chen; Zhenpei Chen
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Paper Abstract

When a fiber with four layers is illuminated by a laser beam collimated perpendicular to its axis, an asymmetry in the frontscattered light pattern will be observed. In our opinions, the eccentricity of fiber core results in it. We deduced the formula and achieved the intensity display from the different path between refracted rays by whole four layers and reflected rays by the fiber core using geometric ray tracing, and calculated the interference geometrically between the refracted rays that traverse whole four layers and one that go through only the outside three layers. The latter is responsible for the modulation of the intensity display. We found that the theoretical values nearly agreed with the experiment and the 5% eccentricity of the fiber core can be inspected. At the same time, this method can be used to in- line inspection of the eccentricity for the fiber manufacturing.

Paper Details

Date Published: 6 October 2000
PDF: 4 pages
Proc. SPIE 4231, Advanced Optical Manufacturing and Testing Technology 2000, (6 October 2000); doi: 10.1117/12.402756
Show Author Affiliations
Dahai Li, Sichuan Univ. (China)
Huaixin Chen, Sichuan Univ. (China)
Zhenpei Chen, Sichuan Univ. (China)


Published in SPIE Proceedings Vol. 4231:
Advanced Optical Manufacturing and Testing Technology 2000
Li Yang; Harvey M. Pollicove; Qiming Xin; James C. Wyant, Editor(s)

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