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:
Nov. 12, 2002
Filed:
Jun. 02, 2000
Applicant:
Inventor:
Robert I. MacDonald, Manotick, CA;
Assignee:
JDS Uniphase Inc., Ottawa, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/26 ; G02B 6/42 ; G02B 6/00 ; H04J 1/406 ;
U.S. Cl.
CPC ...
G02B 6/26 ; G02B 6/42 ; G02B 6/00 ; H04J 1/406 ;
Abstract
An optical switching device for controlling an optical signal is disclosed. The optical switching device is in the form of an optical loop, the loop having two ports for launching or receiving light. A switching element is interposed within the loop for selectively launching light to one of the two ports. The switching element has a polarization rotating element for rotating the polarization of light incident thereon and a wavelength dependent filter disposed to bypass the polarization rotating element or direct a signal propagating within the loop through the polarization rotating element in dependence upon wavelength.