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. 28, 2005
Filed:
Sep. 07, 2001
Daniel J. Blumenthal, Santa Barbara, CA (US);
Bengt-erik Olsson, Gothenburg, SE;
Giammarco Rossi, Pavia, IT;
Timothy Eugene Dimmick, Oviedo, FL (US);
Daniel J. Blumenthal, Santa Barbara, CA (US);
Bengt-Erik Olsson, Gothenburg, SE;
Giammarco Rossi, Pavia, IT;
Timothy Eugene Dimmick, Oviedo, FL (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A suite of optical performance monitoring (OPM) methods, based on optical subcarrier multiplexing, are described by the invention. The strength of this approach lies in the simplicity of double sideband subcarrier signals and the fact that these signals travel the complete optical path with the baseband signal of interest. The subcarrier signals can be recovered using techniques described in the application and are immune to fiber dispersion induced fading.