Method of determining the end face position of an optical wavegu

Details Method of determining the end face position of an optical wavegu Method of determining the end face position of an optical wavegu

1991-06-18

1992-03-10

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356375, G01N 2184, G01B 1114

Patent

active

050945297

ABSTRACT:
A method is provided for determining the end face position of an optical waveguide in a coordinate direction extending in the axial direction of the optical waveguide (1, 2) by means of a video camera via a processor. The method is simplified by means of the following steps: successive intensity values of the video signal are detected and stored by the holding unit (10) which intensity values are taken along a slit in a direction (y) which is perpendicular to the line direction (x) at the area of a coordinate position (x.sub.s); the processor converts the stored intensity values (I.sub.s) into a slit mean (averaged) intensity signal I.sub.m (x) and stores this signal; subsequently further slit signals (I.sub.s) are similarly formed and stored thereby covering an area overlying the end face of the optical waveguide (1, 2); and the position coordinates (x.sub.E1, x.sub.E2) of the end face of the optical waveguides (1, 2) is determined from the variation I.sub.m (x).

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