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:
May. 06, 2025
Filed:
Feb. 08, 2024
The Shape Sensing Company, Austin, TX (US);
Alex Tongue, Dripping Springs, TX (US);
Justin Braun, Austin, TX (US);
Pierrick Vulliez, Santa Barbara, TX (US);
The Shape Sensing Company, Austin, TX (US);
Abstract
MFB twist distribution data is calculated along a multi-fiber shape sensor bundle (MFB) using optical frequency domain reflectometry (OFDR) phase interrogation data. Phase data is extracted from OFDR interferometric interrogation data acquired from an MFB having single core radially offset fibers with fiber Bragg gratings (FBGs) helically wrapped about and rigidly adhered to a central single core fiber with BRFs. A change in phase between current and previously acquired phase signals is calculated for the fibers. The change in phase is unwrapped and FBG gap-induced unwrapping discontinuities are accounted for in the change in phase. The FBG gap-mitigated phase differences are determined for each of the offset fibers and then averaged. The center fiber gap-mitigated phase difference is subtracted from the average to yield a twist-phase difference. Bending-induced changes are removed to create bend-compensated twist-phase difference distribution which is used to calculate the MFB twist distribution data along the MFB.