The design of analysis system of refractive index profile of optical fiber

Gao He; Zhihai Liu

doi:10.1117/12.906571

5 December 2011 The design of analysis system of refractive index profile of optical fiber

Gao He, Zhihai Liu

Proceedings Volume 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 819719 (2011) https://doi.org/10.1117/12.906571
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

This paper developed an intelligent optical fiber refractive index profile measurement system. This system is based on the principle of the refracted near-field measurement. The whole system is the use of a unique high-resolution non-contact capacitive displacement sensor to monitor the scanning position of the fiber measured. At the same time we used a shading screen which was embedded into the sample pool. Using this method, we can totally save space. Finally, we used a high curvature condenser to collection of reflected light which we used a photo detector to collect. The collected signal was brought into the computer to calculate the optical fiber refractive index. The whole system is totally enclosed operating instrument with an easy-to-use software interface for performing measurements of both multi mode and single mode optical fiber, which can easy pick up the signal automatically and processing in computer. Measurement accuracy can reach 10^-4. It is fit for measuring the refractive index of single-mode fibers and multi-mode fibers.

Citation Download Citation

Gao He and Zhihai Liu "The design of analysis system of refractive index profile of optical fiber", Proc. SPIE 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 819719 (5 December 2011); https://doi.org/10.1117/12.906571

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