High-bandwidth multimode optical fiber having reduced bending losses

US8428410B2 · kind B2 · utility

Assignee

• Draka Comteq B.V. · NL

Inventors

• Denis Molin · Draveil, FR
• Marianne Bigot-Astruc · Marcoussis, FR
• Pierre Sillard · Le Chesnay, FR
• Koen de Jongh · Son en Breugel, NL

Key dates

• Filing date: Dec 3, 2010
• Grant date: Apr 23, 2013
• Expiry date: Mar 16, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/03666
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present invention embraces a multimode optical fiber that includes a central core having an alpha-index profile, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the central core's alpha-index profile has a minimum refractive index at the central core's radius that corresponds to a refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications.