The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2002
Filed:
Aug. 21, 2000
Casey S. Shaar, Portland, OR (US);
GN Nettest (Oregon), Inc., Beaverton, OR (US);
Abstract
Concentricity of an optical fiber segment is determined by positioning the fiber segment with its central axis substantially coinciding with an axis of rotation, the fiber segment being in a first angular position about the axis of rotation, imaging the end face of the fiber on a detector, and measuring the location of the image of the center of the core relative to the location of the image of the center of the cladding in the first angular position. The fiber segment is then rotated about the axis of rotation to a second angular position and the location of the image of the center of the core relative to the location of the image of the center of the cladding in the second angular position is measured. The fiber segment is again rotated about the axis of rotation to a third angular position and the location of the image of the center of the core relative to the image of the center of the cladding in the third angular position is measured. The radius of the circle that circumscribes the locations of the image of the center of the core relative to the image of the center of the cladding is then calculated.