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:
Jun. 05, 2018
Filed:
Oct. 15, 2014
Silixa Ltd., Elstree, Hertfordshire, GB;
Chevron U.s.a. Inc., San Ramon, CA (US);
Mahmoud Farhadiroushan, Elstree, GB;
Daniel Finfer, Elstree, GB;
Veronique Mahue, Elstree, GB;
Tom Parker, Elstree, GB;
Sergey Shatalin, Elstree, GB;
Dmitry Strusevich, Elstree, GB;
Silixa Ltd., Elstree Hertfordshire, GB;
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
Embodiments of the present invention provide a cable for optical fiber sensing applications formed from fiber wound around a cable core. A protective layer is then preferably placed over the top of the wound fiber, to protect the fiber, and to help keep it in place on the cable core. The cable core is preferably of a diameter to allow bend-insensitive fiber to be wound thereon with low bending losses. The effect of winding the fiber onto the cable core means that the longitudinal sensing resolution of the resulting cable is higher than simple straight fiber, when the cable is used with an optical fiber sensing system such as a DAS or DTS system. The achieved resolution for the resulting cable is a function of the fiber winding diameter and pitch, with a larger diameter and reduced winding pitch giving a higher longitudinal sensing resolution.