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:
Sep. 08, 2026
Filed:
May. 31, 2024
Nokia Solutions and Networks Oy, Espoo, FI;
Mikael Mazur, Summit, NJ (US);
Nicolas Fontaine, New Providence, NJ (US);
Nokia Solutions and Networks Oy, Espoo, FI;
Abstract
A method and apparatus of OFDR are disclosed, in which a pair of probe signals are launched, on mutually orthogonal channels, into the optical fiber cable that is to be monitored. In a digital processing circuit, phase noise is cancelled from the return signals after detecting them in their respective mutually orthogonal channels and after demodulating them, by combining them such that noise components of the respective demodulated signals are mutually cancelled. In embodiments, a conjugate pair of probe signals are launched, on mutually orthogonal channels, into the optical fiber cable.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile