Buffered large core fiber

US8554039B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Seldon David Benjamin · Corning, US
• Kevin Wallace Bennett · Hammondsport, US
• Gregory B. Bohler · Lenoir, US
• Jeffrey Coon · Dalton, US
• Samuel Don Navé · Newton, US

Key dates

• Filing date: Oct 11, 2010
• Grant date: Oct 8, 2013
• Expiry date: Aug 10, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/4402
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical fiber comprising: (i) a multi-mode silica based glass core, said core having a 80-300 μm diameter and an index of refraction n1; (ii) a cladding surrounding the core, said cladding having a thickness ≦20 μm and index of refraction index of refraction n2<n1, the cladding comprising (a) fluorine doped silica with relative index of refraction delta <0, or (b) a polymer with relative index of refraction delta <0; (iii) a protective coating, the protective coating having a Young's modulus greater than 700 MPa, a thickness ≦15 μm, and an index of refraction index of refraction n3>n2; and (iv) a permanent buffer.