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. 24, 2015
Filed:
Jun. 18, 2013
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventors:
Olga Vassilieva, Plano, TX (US);
Inwoong Kim, Allen, TX (US);
Jeng-Yuan Yang, Garland, TX (US);
Motoyoshi Sekiya, Richardson, TX (US);
Assignee:
Fujitsu Limited, Kawasaki-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/08 (2006.01); H04B 10/2507 (2013.01);
U.S. Cl.
CPC ...
H04B 10/2572 (2013.01);
Abstract
Methods and systems for asymmetrically compensating degradation of an optical signal-to-noise ratio (OSNR) induced by polarization dependent loss (PDL) in dual-polarization optical system include using an OSNR compensator. The OSNR compensator may separate the dual-polarization components and determine which component has degraded OSNR. The degraded component may be OSNR compensated using a phase-sensitive amplifier and/or a regenerator with a phase-sensitive amplifier.