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:
Dec. 14, 1999
Filed:
Oct. 20, 1998
Applicant:
Inventors:
Ernest Eisenhardt Bergmann, Fountain Hill, PA (US);
Neal Henry Thorsten, Lebanon, NJ (US);
Assignee:
Lucent Technologies, Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359281 ; 359282 ; 359484 ; 359494 ; 359256 ; 372703 ;
Abstract
An optical circulator is disclosed that utilizes a polarization rotator comprising a polarization changer (e.g., a properly-oriented half-wave plate) in combination with a pair of latched garnet Faraday rotators. The latched garnet rotators are positioned next to each other and oriented so that one latched garnet rotator provides clockwise rotation and the other provides counterclockwise rotation. The use of latched garnet with a single half wave plate results in an arrangement that is reduced in overall size and does not require epoxy to interconnection the various piece parts.