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.

Date of Patent:
Jul. 21, 2026

Filed:

Sep. 02, 2022
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Roberto Magri, Genoa, IT;

Davide Sanguinetti, Genoa, IT;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 11/00 (2006.01); H04B 10/071 (2013.01);
U.S. Cl.
CPC ...
G01M 11/3118 (2013.01); G01M 11/3154 (2013.01); H04B 10/071 (2013.01);
Abstract

The present application relates to a method for performing optical time domain reflectometry (OTDR) on an optical fibre. The method comprises transmitting a first signal into an optical fibre, wherein the first signal comprises a sequence of optical radiation pulses based on a coded sequence, wherein each of the sequence of optical radiation pulses are separated by a fill pattern controlled by a binary sequence of high and low values.


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