Distributed Bragg Reflector Laser Based on Composite Fiber Heavily Doped with Erbium Ions

Abstract

A distributed Bragg reflector (DBR) laser with a specially designed, heavily Er3+-doped composite fiber of a length as short as 1.8 cm is demonstrated. The DBR laser, pumped by a 980 nm laser diode with power of up to 370 mW, generates single-frequency radiation at a wavelength of 1535 nm with a narrow instantaneous linewidth of 3+-doped fiber laser parameters pave the way toward a broad range of practical applications from telecommunications and sensing to scientific research.

Keywords

• fiber laser
• fiber Bragg gratings
• distributed Bragg reflectors
• composite erbium fiber
• single-frequency regime
• narrow linewidth