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:
Feb. 03, 2004
Filed:
Sep. 26, 2001
Alfred W. Healy, Bedford, MA (US);
Northrop Grumman Corporation, Woodland Hills, CA (US);
Abstract
A method and system for winding optical fiber. In an embodiment, the method and system can be used to tune a fiber optic gyroscope (FOG) for a desired eigenfrequency and/or scale factor. A FOG assembly can include an inner coil that can have a normal and a reverse breakout point, a normal and a reverse lead emanating therefrom, and a normal and a reverse splice that can be connected at normal and reverse connection points. The coil can be wrapped to include a reversal where the reverse section of fiber changes direction in which it is wrapped on a spool. The fiber length can be adjusted based on the desired eigenfrequency. Furthermore, based on a scale factor, a forward (plus) and reverse (minus) fiber length can be computed and at least one of several lengths that can be defined by the ends of the normal and reverse splices, the normal and reverse connection points, the normal and reverse leads, the normal and reverse breakout points, and the reversal, can be adjusted to further attain the scale factor and/or eigenfrequency.