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. 27, 2026
Filed:
Aug. 16, 2024
Applicant:
Infinera Corporation, San Jose, CA (US);
Inventors:
Reza Ashrafi, Ottawa, CA;
Sung Han Chung, Kanata, CA;
Suet Yuen, Kanata, CA;
Manish Sharma, Morgan Hill, CA (US);
Yan Han, Richardson, TX (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/071 (2013.01); G01M 11/00 (2006.01);
U.S. Cl.
CPC ...
G01M 11/3145 (2013.01); G01M 11/3109 (2013.01); H04B 10/071 (2013.01); G01M 11/3136 (2013.01);
Abstract
The proposed full-coherent optical time domain reflectometry (FC-OTDR) solution extracts full optical phase and state of the polarization (SOP) information for fiber intrusion detection by constructing a continuous reflected SOP from each point of the fiber length. Intrusion location is then extracted from the resulting SOP change patterns.
Ashrafi, Reza. (2026). Full coherent optical time-domain reflectometry (fc-otdr) with intrusion detection capability over data transmission fiber (U.S. Patent No. 12774936). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12774936
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