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Proceedings Paper

An accurate method for alignment of polarization-maintaining fiber with CCD micro-imaging system
Author(s): Yan-jie Li; Rui Wang; Chun-xi Zhang; Yuan-hong Yang; De-wei Yang
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Paper Abstract

Polarization-Maintaining(PM) optical fiber connector is widely used in various kinds of optic fiber sensors and communication equipments. The alignment of PM fiber polarization axis with the orientation key axis is one of the most important factors determining the extinction ratio of the connector. In order to ensure high accurate alignment of these two axises, CCD micro-imaging system is employed to take the cross-section image of Panda PM fiber, the edge points of stress rods are extracted by sub-pixel edge detection algorithm based on Hessian matrix. Consequently, the automatic detection of the polarization axis and the accurate calculation of the angle θ between the two axises are realized. Experiment results indicate that the method, combining CCD micro-imaging system and an accurate calculation of the angle θ, is effective to improve the alignment precision, which can reach ±0.5°. The work lays the foundation for realizing the auto-manufacture of PM optical fiber connector.

Paper Details

Date Published: 6 August 2009
PDF: 7 pages
Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 73841R (6 August 2009); doi: 10.1117/12.835670
Show Author Affiliations
Yan-jie Li, Univ. of Aeronautics and Astronautics (China)
Rui Wang, Univ. of Aeronautics and Astronautics (China)
Chun-xi Zhang, Univ. of Aeronautics and Astronautics (China)
Yuan-hong Yang, Univ. of Aeronautics and Astronautics (China)
De-wei Yang, Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 7384:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications
Kun Zhang; Xiang-jun Wang; Guang-jun Zhang; Ke-cong Ai, Editor(s)

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