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:
Oct. 01, 2019
Filed:
Apr. 27, 2018
Applicant:
Adva Optical Networking SE, Meiningen OT Dreissigacker, DE;
Inventor:
Michael Eiselt, Kirchheim, DE;
Assignee:
ADVA OPTICAL NETWORKS SE, Meiningen Ot Dreissigacker, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/079 (2013.01); G01M 11/00 (2006.01); H04B 10/071 (2013.01); H04B 10/25 (2013.01); H04J 14/02 (2006.01);
U.S. Cl.
CPC ...
H04B 10/0797 (2013.01); G01M 11/3145 (2013.01); H04B 10/071 (2013.01); H04B 10/07955 (2013.01); H04B 10/25 (2013.01); H04J 14/02 (2013.01);
Abstract
An optical time-domain reflectometer, OTDR, apparatus is configured to measure a backscattered trace of a fiber link under test (FLUT). The OTDR apparatus includes at least one photo diode adapted to detect an optical signal reflected from points along the fiber link under test in response to an optical test signal generated by a laser of the OTDR apparatus and supplied to the fiber link under test. The reflected optical test signal is attenuated or amplified automatically such that the power of the optical signal received by the photodiode is limited to a predetermined power range.