Rare-earth-doped amplifying optical fiber

US9162917B2 · kind B2 · utility

Assignee

• Draka Comteq B.V. · NL

Inventors

• Ekaterina Burov · Boulogne-Billancourt, FR
• Alain Pastouret · Massy, FR
• Louis-Anne de Montmorillon · Paris, FR
• Aurelien Bergonzo · Chaville, FR

Key dates

• Filing date: Mar 2, 2012
• Grant date: Oct 20, 2015
• Expiry date: Aug 4, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/1695
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An amplifying optical fiber includes an inner core, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the inner core includes a main matrix (e.g., silica-based) doped with at least one rare earth element. The depressed trench typically has a volume integral V13 of between about −2200×10−3 μm2 and −1600×10−3 μm2. Exemplary embodiments of the amplifying optical fiber are suitable for use in a compact configuration and high power applications.