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:
Jan. 26, 2016
Filed:
Sep. 18, 2012
Commissariat À L'énergie Atomique ET Aux Énergies Alternatives, Paris, FR;
Universite Lille 1 Sciences ET Technologies, Villenueve d'Ascq, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Emmanuel Hugonnot, Talence, FR;
Laure Lago, Le Barp, FR;
Arnaud Mussot, Hellemmes, FR;
Yves Quimquenpois, Marquette lez Lille, FR;
Géraud Bouwmans, Velleneuve d'Ascq, FR;
Laurent Bigot, Hellemmes, FR;
Constance Valentin, Croix, FR;
Commissariat a L'Energie Atomique et aux Energies Alternatives, Paris, FR;
Universite Lille 1 Sciences et Technologies, Cedex, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
The fiber comprises a core () having an index N and diameter of 10 μm or more, surrounded by a ring () having an index N+Δn and thickness ΔR, and cladding () surrounding the ring and comprising for example air gaps (). According to the invention: Δn≧10and ΔR=α/(Δn)[1] where: 5×10μm≦α≦5×10μm and 0.5≦β≦1.5. The numbers α and β are dependent on the wavelength λ of the light guided by the fiber, the number of missing gaps therein, the diameterof the gaps, the spacing Λ thereof and N. To design the fiber, λ, the number of missing gaps, d/Λ, the core doping content, Λ and Δn are chosen; and ΔR is determined using equation [1] so as to obtain a flattened fundamental mode.