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. 21, 2019
Filed:
Aug. 30, 2017
Corning Incorporated, Corning, NY (US);
Ming-Jun Li, Horseheads, NY (US);
Shenping Li, Painted Post, NY (US);
Jeffery Scott Stone, Addison, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The single-mode optical fibers have a core region that includes an inner core region having a delta value Δand a radius rimmediately surrounded by an outer core region of radius rand a delta value Δ<Δ, wherein Δ-Δis in the range from 0.3% to 2%. A cladding region of radius rimmediately surrounds the core region. The inner and outer regions define an annular width δr=r−r. At least one of r, r, δr and rchanges with a period p in the longitudinal direction between first and second values each having a corresponding level distance d. The change occurs over a transition distance dsuch that d/d<0.1. The Brillouin frequency shift Δf changes by an amount δ[Δf] that is least 10 MHz over each period p, thereby allowing for Brillouin frequency-shift management in fiber-based sensor systems.