Transmission optical fiber having large effective area

US8041172B2 · kind B2 · utility

Assignee

• Draka Comteq B.V. · NL

Inventors

• Pierre Sillard · Le Chesnay, FR
• Denis Molin · Draveil, FR
• Louis-Anne de Montmorillon · Paris, FR
• Marianne Bigot-Astruc · Marcoussis, FR
• Simon Richard · Palaiseau, FR

Key dates

• Filing date: Apr 7, 2008
• Grant date: Oct 18, 2011
• Expiry date: Jul 5, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/02266
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present invention relates to a transmission optical fiber. The optical fiber includes, from its center to its periphery a central core, an intermediate cladding, and a depressed cladding. The optical fiber has an effective area (Seff) of at least about 120 μm2 at a wavelength of 1550 nm and an effective cutoff wavelength (λCeff) of less than 1600 nm. The optical fiber has an effective area of more than 120 μm2 with a cutoff wavelength limited to less than about 1600 nm without degradation of other optical parameters (e.g., attenuation losses and dispersion).