Abstract

We experimentally and theoretically study the propagation of a $1536\mathrm{nm}$ light pulse superposed on a continuous wave background in a highly doped erbium fiber pumped at $977\mathrm{nm}$. We observe a transition from subluminal to superluminal propagation with the pulse bandwidth. Furthermore, an improvement of the pulse delay and pulse distortion when increasing the pulse peak and keeping constant the background power is reported. These results are due to the relation between the pump-broadened transparency hole (induced by the coherent population oscillations) and the competition between gain and absorption along the fiber.

© 2011 Optical Society of America

Coherent double-switching between superluminal and subluminal propagation of probe pulse via AC Stark shift

Saswata Ghosh
J. Opt. Soc. Am. B 30(9) 2540-2548 (2013)

Spectral hole burning in erbium-doped fibers for slow light

Sonia Melle, Oscar G. Calderón, Miguel A. Antón, Fernando Carreño, and Ana Egatz-Gómez
J. Opt. Soc. Am. B 29(8) 2189-2198 (2012)

Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system

Shang-qi Kuang, Ren-gang Wan, Jun Kou, Yun Jiang, and Jin-yue Gao
J. Opt. Soc. Am. B 26(12) 2256-2260 (2009)

Dynamics and limitations of superluminal propagation based on long-cavity Brillouin fiber lasing oscillation

Minglei Qin, Liang Zhang, Tantan Wang, and Li Zhan
J. Opt. Soc. Am. B 33(5) 989-995 (2016)

Phase controlled subluminal and superluminal light propagation in double quantum wells

Mostafa Sahrai, Mozhgan Momeni-Demne, and Jafar Poursamad
J. Opt. Soc. Am. B 32(6) 1139-1145 (2015)