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:
Feb. 26, 2008
Filed:
Apr. 14, 2006
Philippe A. Perrier, Plano, TX (US);
Sergey P. Burtsev, Allen, TX (US);
DO IL Chang, Allen, TX (US);
Andrzej S. Kaminski, Allen, TX (US);
Andrej B. Puc, Allen, TX (US);
Philippe A. Perrier, Plano, TX (US);
Sergey P. Burtsev, Allen, TX (US);
Do Il Chang, Allen, TX (US);
Andrzej S. Kaminski, Allen, TX (US);
Andrej B. Puc, Allen, TX (US);
Xtera Communications, Inc., Allen, TX (US);
Abstract
A method of communicating an optical signal includes generating an optical signal at a bit rate of at least 2.5 Gb/s. The optical signal including at least thirty optical channels. In one particular embodiment, at least some of the thirty optical channels reside within a 1567-1620 nanometer wavelength range. The method also includes receiving the optical signal at a ROPA that includes a rare-earth doped optical fiber. In addition, the method includes introducing a pump signal to a communication span of the unrepeatered optical communication system. The pump signal operable to amplify the optical signal by Raman amplification within the communication span and including at least one pump signal wavelength operable to excite the rare-earth doped fiber. The method further includes receiving the optical signal after the optical signal has traversed at least 200 kilometers of the communication span.