Multimode Fabry-Perot fiber laser

US9647410B2 · kind B2 · utility

Assignee

• IPG PHOTONICS CORPORATION · US

Inventors

• Andrey Mashkin · Burbach, DE
• Fedor SHCHERBINA · Burbach, DE

Key dates

• Filing date: Dec 3, 2015
• Grant date: May 9, 2017
• Expiry date: Dec 3, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/1618
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A multimode (“MM”) fiber oscillator is configured with MM active fiber doped with light emitters, a pair of MM passive fibers spliced to respective opposite ends of the MM active fiber, and a plurality of MM fiber Bragg gratings (“FBG”) written in respective cores of the MM passive fibers to provide a resonant cavity. The passive and active fibers are configured with respective cores which are dimensioned with respective diameters matching one another and substantially identical numerical apertures.