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. 02, 2003
Filed:
Jan. 02, 2002
Applicant:
Inventors:
Yan Wang, Norcross, GA (US);
Yuan P. Li, Duluth, GA (US);
Assignee:
Wavesplitter Technologies, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/12 ; G02B 6/28 ; G02B 6/26 ; G02B 6/42 ; G02B 6/34 ;
U.S. Cl.
CPC ...
G02B 6/12 ; G02B 6/28 ; G02B 6/26 ; G02B 6/42 ; G02B 6/34 ;
Abstract
A method and apparatus provides a WDM optical signal having a plurality of channels with a pair-wise orthogonal polarization state. The method begins by receiving a plurality of unpolarized optical wavelengths defining a plurality of optical channels separated by a prescribed channel spacing. A polarization wavelength dependent shift is imparted to the optical wavelengths, which is substantially equal to a particular fraction of the prescribed channel spacing.