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:
Jun. 08, 1993
Filed:
Aug. 29, 1991
Applicant:
Inventor:
Dale R Lutz, Maplewood, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, Saint Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 11 ; 385 27 ;
Abstract
A depolarizer operates by splitting light traveling along an optical fiber into two sub-beams. One of the sub-beams is inserted into a recirculation loop, where it has its polarization state altered. The light in the recirculation loop is then reinserted into the fiber at a position prior to that at which the splitting occurred.