Random distributed Rayleigh feedback fiber laser based on double-cladding weakly ytterbium-doped fiber

US10644475B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Zinan Wang · Sichuan, CN
• Jiaqi Li · Lo Wu, CN
• HAN WU · Sichuan, CN
• Yunjiang Rao · Hangzhou City, CN

Key dates

• Filing date: Aug 24, 2018
• Grant date: May 5, 2020
• Expiry date: Aug 24, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S2301/03
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A random distributed Rayleigh feedback fiber laser based on a double-cladding weakly ytterbium-doped fiber includes: a pump laser source, a pump combiner, a cladding power stripper, and a double-cladding weakly ytterbium-doped fiber for simultaneously achieving distributed active gain and random distributed Rayleigh feedback. An output end of the pump combiner is connected with one end of the double-cladding weakly ytterbium-doped fiber, the other end of the double-cladding weakly ytterbium-doped fiber is connected with an input end of the cladding power stripper, and a concentration of ytterbium ions in the double-cladding weakly ytterbium-doped fiber is in a range of 0.5×1023 to 1×1025/m3. The laser provided by the present invention solves the problem that the existing random fiber lasers cannot simultaneously utilize distributed active gain and random distributed Rayleigh feedback with a single type of fiber.