Abstract
A nondestructive technique of determining the refractive index profile of an optical fiber is presented. This method involves collecting the pathlength data of rays passing through the fiber due to side-illumination and taking the fast Fourier transform of these data followed by a numerical integration. It is found that this technique yields results in good agreement with measurements from the near-field scanning technique. The advantage of the present method is that it can readily be extended to fibers of noncircular cross section.
© 1979 Optical Society of America
Full Article | PDF ArticleMore Like This
Charoon Saekeang and Pak L. Chu
Appl. Opt. 18(7) 1110-1116 (1979)
D. Marcuse and H. M. Presby
Appl. Opt. 18(1) 14-22 (1979)
L. S. Watkins
Appl. Opt. 18(13) 2214-2222 (1979)