Photonics, Vol. 10, Pages 679: Distributed Bragg Reflector Laser Based on Composite Fiber Heavily Doped with Erbium Ions

Photonics, Vol. 10, Pages 679: Distributed Bragg Reflector Laser Based on Composite Fiber Heavily Doped with Erbium Ions

Photonics doi: 10.3390/photonics10060679

Authors: Mikhail I. Skvortsov Kseniya V. Proskurina Evgeniy V. Golikov Alexander V. Dostovalov Vadim S. Terentyev Olga N. Egorova Sergey L. Semjonov Sergey A. Babin

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 <100 Hz and a high output power of 2 mW. The obtained Er3+-doped fiber laser parameters pave the way toward a broad range of practical applications from telecommunications and sensing to scientific research.