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Proceedings Paper

New method for the recovery of the refractive-index profile of an optical waveguide from the measured coupling angles
Author(s): Qing Liu; Zhuangqi Cao; Qishun Shen; Xiaoming Dou; Yingli Chen; Yukihiro Ozaki
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Paper Abstract

In this paper, we present a new method used for the recovery of the refractive-index profile of an optical waveguide from the measured coupling angles. Two improvements have been made in our method. First, we determine the surface refractive index of the inhomogeneous waveguide by experiment technique, instead of usual numerical methods. Second, we present a new fitting criterion which is based on the accurate ATMM (Analytic Transfer Matrix Method), but not approximate WKB theory. Experimental results demonstrate our method could give better results compared with the previous techniques.

Paper Details

Date Published: 9 October 2000
PDF: 5 pages
Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); doi: 10.1117/12.402603
Show Author Affiliations
Qing Liu, Shanghai Jiao Tong Univ. (China)
Zhuangqi Cao, Shanghai Jiao Tong Univ. (China)
Qishun Shen, Shanghai Jiao Tong Univ. (China)
Xiaoming Dou, Shanghai Jiao Tong Univ. (China)
Yingli Chen, Shanghai Jiao Tong Univ. (China)
Yukihiro Ozaki, Kwansei-Gakuin Univ. (Japan)


Published in SPIE Proceedings Vol. 4221:
Optical Measurement and Nondestructive Testing: Techniques and Applications
FeiJun Song; Frank Chen; Michael Y.Y. Hung; H.M. Shang, Editor(s)

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