Title :
Nondestructive measurement of index profile of an optical-fibre preform
Author_Institution :
University of New South Wales, School of Electrical Engineering, Kensington, Australia
Abstract :
A simple and fast nondestructive method of measuring the index profile of an optical-fibre preform is presented. In this method, a laser beam is shone perpendicularly to the preform axis, and the exit angle of its backscattered ray is recorded as a function of the distance of the incident ray from the horizontal axis. A numerical integration involving these exit angles gives the profile.
Keywords :
measurement by laser beam; optical fibres; refractive index measurement; backscattered ray; exit angles; index profile; laser beam; nondestructive measurement; numerical integration; optical fibre preform;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770520
