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:
Apr. 08, 2025
Filed:
Apr. 08, 2021
Petroliam Nasional Berhad (Petronas), Kuala Lumpur, MY;
Ahmad Riza Ghazali, Kuala Lumpur, MY;
Mohamad Faizal Bin Abd Rahim, Kuala Lumpur, MY;
Mohd Fahmi Azman, Kuala Lumpur, MY;
Hairul Azhar Ab Rashid, Kuala Lumpur, MY;
M Hafizal Md Zahir, Kuala Lumpur, MY;
Mohd Ridzuan Mokhtar, Kuala Lumpur, MY;
PETROLIAM NASIONAL BERHAD (PETRONAS), Kuala Lumpur, MY;
Abstract
An optical fiber for measuring pressure comprising a core for guiding optical signals along a length of the core and a cladding layer including a plurality of stress applying parts disposed around the core. The plurality of stress applying parts are disposed parallel to and symmetrically around the core to induce intensified symmetric shear stress upon application of external pressure while preventing birefringence. The optical fiber provides improved strain sensitivity compared to a standard single-mode optical fiber.