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Proceedings Paper

Applications of optical fiber techniques to optical metrology
Author(s): Nai-Keng Bao; Guan-chang Jin; Po Sheun Chung
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Paper Abstract

Optical fiber is a powerful element in optical communication and other optical techniques. A novel optical metrology based on optical fiber techniques is presented in this paper. The advantages of this technique provide not only the mini-type apparatus but also a simple phase-shifting method to increase the measuring accuracy. A high birefringence fiber with a beat length of 1.2 mm for phase-shifting technique is introduced. The experimental set-up and the technique principle, details will be discussed. Several application examples of optical metrology based on the optical fiber set-up are presented. The application areas include displacement measurement, 3D shape measurement and nondestructive testing. One of the important features of this advanced apparatus is its ability to apply in small object measurements for the electronic industry.

Paper Details

Date Published: 20 March 1997
PDF: 5 pages
Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); doi: 10.1117/12.269821
Show Author Affiliations
Nai-Keng Bao, City Univ. of Hong Kong (Hong Kong)
Guan-chang Jin, Tsinghua Univ. (China)
Po Sheun Chung, City Univ. of Hong Kong (Hong Kong)

Published in SPIE Proceedings Vol. 2921:
International Conference on Experimental Mechanics: Advances and Applications
Fook Siong Chau; C. T. Lim, Editor(s)

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