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:
Dec. 03, 2019
Filed:
May. 30, 2018
Applicant:
Adva Optical Networking SE, Meiningen, DE;
Inventors:
Assignee:
ADVA Optical Networking SE, Meiningen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/25 (2013.01); H04B 10/077 (2013.01); H04B 10/40 (2013.01); H04J 14/02 (2006.01); H04Q 11/00 (2006.01);
U.S. Cl.
CPC ...
H04B 10/0775 (2013.01); H04B 10/0773 (2013.01); H04B 10/25 (2013.01); H04B 10/40 (2013.01); H04J 14/02 (2013.01); H04Q 2011/0073 (2013.01);
Abstract
A method for determining the latency or length of an optical path of a fiber-optic transmission link includes: starting a measurement cycle at a first point in time; stopping the measurement cycle at a second point in time after having received a last measurement bit or bit pattern at the first end; determining, at the first end, the total round-trip delay of the optical path by evaluating a time information available at the first end; and calculating the length of the optical path by using the total round-trip delay and the group velocity characterizing the signal propagation along the optical path.