Multimode optical fiber

US8391661B2 · 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: Jan 31, 2012
• Grant date: Mar 5, 2013
• Expiry date: Jan 31, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/0288
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A multimode optical fiber includes a central core having a graded-index profile with a delta value of about 1.9 percent or greater. The graded-index core profile has at least two different alpha parameter values along the core radius, namely a first value in an inner zone of the central core and a second value in an outer zone of the central core. The second alpha parameter value is typically less than the first alpha parameter value. The graded-index core profile and its first derivative are typically substantially continuous over the width of the graded-index core.