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Proceedings Paper

Measurement of single mode fiber non-circularity based on image processing
Author(s): Shaorong Xiao; Hen Hu; Xiaoli Mao; Bo Zhang
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Paper Abstract

Method of computer digital image processing was utilized to measure non-circularity of single mode fiber. The two end faces were polished, the faces come into plane, and which are perpendicular to fiber axis. Laser beam was thrown on one end of the fiber, and an inerratic spot was formed from light beam put out at another end of the fiber. The spot was shot by a digital camera with 5.1x106 pixels. The image was processed with a computer. The process includes full color picture being translated into gray one, contrast enhancement, median filtering, and picking-up contour line. The every different three points on the contour line were taken out to determine one circular radius, average of many radiuses was calculated, The maximum radius and the minimum radius are picked out to calculate the fiber no-circularity in according to definition. Visual C++ and Matlab were used to programme. The results of experiment show that measurement precision is independent of the sampling number, but dependence of gray value, and average standard deviation is about 0.03%.

Paper Details

Date Published: 3 February 2009
PDF: 5 pages
Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 716006 (3 February 2009); doi: 10.1117/12.805642
Show Author Affiliations
Shaorong Xiao, Nanjing Univ. of Information Science & Technology (China)
Hen Hu, Nanjing Univ. of Information Science & Technology (China)
Xiaoli Mao, Nanjing Univ. of Information Science & Technology (China)
Bo Zhang, Nanjing Univ. of Information Science & Technology (China)


Published in SPIE Proceedings Vol. 7160:
2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications

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