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. 20, 2007
Filed:
Apr. 27, 2005
Applicants:
Jonathan D. Egan, Elkridge, MD (US);
Anastasios P. Goutzoulis, Annapolis, MD (US);
Inventors:
Jonathan D. Egan, Elkridge, MD (US);
Anastasios P. Goutzoulis, Annapolis, MD (US);
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for determining the phase noise of a fiber optic cable includes a step of transmitting a reference signal and a test signal over the fiber optic cable to be tested. The reference and test signal are provided with different wavelengths. The phase noise of the fiber optic cable is calculated by comparing the reference signal and the test signal output from the fiber optic cable.