Method of and system for determining refractive-index profiles o

Details Method of and system for determining refractive-index profiles o Method of and system for determining refractive-index profiles o

1980-11-14

1982-09-14

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356128, G01N 2184, G01N 2141

Patent

active

043492762

ABSTRACT:
To facilitate determination of the refractive-index profile of an optical fiber by the near-field technique, the fiber to be examined is inserted into a body of transparent liquid held by surface tension in a surrounding capillary tube also made of light-transmissive material. The tube, which is axially coextensive with the inserted fiber, has a refractive index less than the minimum index of the fiber core and cladding whereas the liquid has a refractive index exceeding the maximum index of the fiber core.

REFERENCES:
"Practical Application of the Refracted Near-Field Technique for the Measurement of Optical Fibre Refractive Index Profiles", White, Optical and Quantum Electronics 11, (1979), pp. 185-196.

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