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:
Aug. 11, 2020
Filed:
Oct. 04, 2017
Applicant:
Nec Laboratories America, Inc., Princeton, NJ (US);
Inventors:
Ezra Ip, West Windsor, NJ (US);
Yue-Kai Huang, Princeton, NJ (US);
Fatih Yaman, Princeton, NJ (US);
Shaoliang Zhang, Princeton, NJ (US);
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/23 (2006.01); H01S 3/094 (2006.01); H04B 10/291 (2013.01); H04B 10/293 (2013.01); H01S 3/067 (2006.01); H01S 3/16 (2006.01); H01S 3/30 (2006.01);
U.S. Cl.
CPC ...
H01S 3/2316 (2013.01); H01S 3/06737 (2013.01); H01S 3/06754 (2013.01); H01S 3/094003 (2013.01); H01S 3/094019 (2013.01); H04B 10/2912 (2013.01); H04B 10/2916 (2013.01); H04B 10/2935 (2013.01); H01S 3/06708 (2013.01); H01S 3/06758 (2013.01); H01S 3/094011 (2013.01); H01S 3/094053 (2013.01); H01S 3/1608 (2013.01); H01S 3/302 (2013.01);
Abstract
An unrepeatered transmission system includes a receiver coupled to a receive span; a transmitter coupled to the receive span; and a plurality of cascaded amplifiers in the receive span with dedicated fiber cores to supply one or more optical pumps from the receiver to each amplifier, wherein the plurality of cascaded amplifiers increase system reach by increasing the length of a back span in an unrepeatered link.