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:
Nov. 15, 2011
Filed:
Oct. 10, 2008
Junfeng Jiang, Tianjin, CN;
Rongqing Hui, Lenexa, KS (US);
Douglas L. Richards, Stilwell, KS (US);
Stephen A. Oliva, Leawood, KS (US);
Junfeng Jiang, Tianjin, CN;
Rongqing Hui, Lenexa, KS (US);
Douglas L. Richards, Stilwell, KS (US);
Stephen A. Oliva, Leawood, KS (US);
Sprint Communications Company L.P., Overland Park, KS (US);
Abstract
A method is provided for measuring polarization dependent loss in an optical transmission system. In the method, a first optical signal is generated, and a polarization of the first optical signal is altered over time. The first optical signal is combined with a second optical signal from the optical transmission system to yield a combined optical signal, which is coherently detected to yield a radio frequency signal. A power of the radio frequency signal is measured. The measured power of the radio frequency signal is processed to generate an indication of the polarization dependent loss of the optical transmission system.