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:
Jun. 12, 2001
Filed:
Dec. 18, 1998
Richard J. Cereo, Beaver Dams, NY (US);
Shou-Jong Sheih, Millport, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
An apparatus and method for amplifying an optical transmission signal having a wavelength of &lgr;,in an optical fiber amplifier. The amplification segment of the optical fiber amplifier comprises a rare earth doped optical fiber having an input end and an output end, a first pump laser for generating a first pump light having a wavelength of &lgr;,, a second pump laser for generating a second pump light having a wavelength of &lgr;,, a first multiplexer having a first input port, a second input port, and an output port, a second multiplexer having a first input port, a second input port, and an output port, and a multiplexer/demultiplexer having two input ports and two output ports. The optical fiber amplifier utilizes the first pump light and the second pump light, each having substantially different wavelengths to simultaneously co-pump power into the input end of the rare earth doped optical fiber amplifier. Both the first pump light and the second pump light are propagated in the same direction as the optical transmission signal and into the input end of the rare earth doped optical fiber amplifier.