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:
May. 26, 2015
Filed:
Jul. 22, 2014
Oplink Communications, Inc., Fremont, CA (US);
Lijie Qiao, Ottawa, CA;
Ting Yang, Wuhan, CN;
Oplink Communications, Inc., Fremont, CA (US);
Abstract
Methods, systems, and apparatus for optical communications. In one aspect, an optical amplifier includes a feed-forward first amplification stage including a rare-earth doped fiber receiving an optical signal and an injected pump light; and a plurality of subsequent amplification stages each including a corresponding rare-earth doped fiber, wherein each of the subsequent amplification stages receives a separately injected portion of the remnant pump light from the first amplification stage, the remnant pump light being split into portions directed to each respective subsequent amplification stage.