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:
May. 29, 1990
Filed:
Oct. 31, 1988
Applicant:
Inventor:
Mark L Wilson, Vadnais Heights, MN (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G01B / ; G01D / ; B05D / ;
U.S. Cl.
CPC ...
25022717 ; 350 9633 ; 350 9634 ; 350320 ; 350 9629 ; 356345 ; 356349 ; 356351 ; 2502 / ; 2502 / ; 25022719 ; 324 96 ; 427163 ;
Abstract
An optical light conducting fiber that has a D-shaped stress sensitive coating of PVF.sub.2 which covers substantially equal length segments of said fiber, so that each of said segments is separated by equal uncoated segments of substantially the same length as said coated segments. The fiber when used in an interferometer provides an antenna that is capable of sensing electromagnetic and other stress-inducting waves in the environment. The optical fiber is polarized by winding it on a specially designed spool, heating it and applying a high intensity electric field in the desired direction.