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Proceedings Paper

Measurement of refractive index in optical fiber prefabricated stick with scanning method
Author(s): Hongying Zhou; Jiabu Chen; Qiu Gao
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Paper Abstract

The refractive index of optical fiber Prefabricated stick has great effect on the transmission characteristic of optical fiber. Consequently, it is necessary to measure the distribution of refractive index. In this paper, a new method is proposed to measure the distribution of refractive index, which uses a thin light beam to scan the optical fiber Prefabricated stick. When a thin light beam irradiates on the optical fiber prefabricated stick, the light is converged because the optical fiber prefabricated stick acts as a columnar lens. After passing by a series of refraction, the light passes through the optical fiber prefabricated stick. Based on the model of refractive index distribution in the optical fiber prefabricated stick, the theoretic output point can be calculated. At the same time, the practical light output point can also be got through experiments. An evaluation function can be constructed with these two values. The model of refractive index distribution in the optical fiber prefabricated stick can be corrected by Monte-Carlo method gradually. At last the evaluation function value will become very little and the practical refractive index distribution can be got.

Paper Details

Date Published: 27 November 2007
PDF: 5 pages
Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67234E (27 November 2007); doi: 10.1117/12.783633
Show Author Affiliations
Hongying Zhou, Univ. of Shanghai for Science and Technology (China)
Donghua Univ. (China)
Jiabu Chen, Univ. of Shanghai for Science and Technology (China)
Qiu Gao, Donghua Univ. (China)


Published in SPIE Proceedings Vol. 6723:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Junhua Pan; James C. Wyant; Hexin Wang, Editor(s)

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