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. 04, 2004
Filed:
Mar. 07, 2002
Applicant:
Inventors:
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/00 ;
U.S. Cl.
CPC ...
H01S 3/00 ;
Abstract
Optical amplification bandwidth is improved by providing an economical and practical way of multiplexing together multiple Raman pump energy sources at disparate wavelengths. An arrayed waveguide grating (AWG) may be used to implement a double multiplexer. The insertion loss of the AWG is very low, allowing a reduction in the necessary power. Also, a single AWG may be used to combine numerous pump wavelengths.