Fast and slow light property improvement in erbium-doped amplifier

Abstract

This work experimentally demonstrates improvement of the fast light property in erbium-doped amplifiers at room temperature. The difference between the signal power and the pump power associated with bending loss is used to control the signal power at the different positions of the erbium-doped fiber (EDF) to improve the fast light property. Periodic bending of the EDF increases the time advance of the probe signal by over 288%. Additionally, this concept also could improve the fast light property using coherent population oscillations in semiconductor optical amplifiers.

Research on the effects of dual pumping on fast light propagation in an Er3+-doped optical fiber

“…Possible applications include all-optical buffers, optical true-time delay lines, and nonlinear optics with low optical intensity. In view of the practical applications, the focus of slow light observation has been shifted to solid-state materials and room temperatures [1][2][3][4][5]. Researchers have always been interested in the wide range of phenomena that can occur in the propagation of optical pulses through a highly dispersive medium.…”