Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Slow and Fast Light (SL)

Control of the Group Velocity of Light in Erbium Doped Fibers Via the Modulation Frequency

Sonia Melle, Óscar G. Calderón, E. Cabrera, M. A. Antón, F. Carreño

Published Jan 1, 2008• 1 citation
Publisher

Abstract

We report a change from sub- to super-luminal propagation solely upon increasing the modulation frequency of an amplitude-modulated 1550 nm signal when propagating through highly-doped erbium fibers pumped at 980 nm.
DOI
10.1364/sl.2008.stub6

Related papers

Modulation-frequency-controlled change from sub- to superluminal regime in highly doped erbium fibers

Sonia Melle, Óscar G. Calderón, E. Cesar +3 more

We report a change from sub- to superluminal propagation upon increasing the modulation frequency of an amplitude-modulated 1,550 nm signal when propagating through highly doped erbium fibers pumped at 980 nm. We show that the interplay between the pump absorption and the pump-power broadening of the spectral hole induced by coherent population oscillations may drastically affect the fractional advancement or delay of the signal for the considered fibers.

Optics Letters•Apr 11, 2008•16 citations

Propagation-induced transition from slow to fast light in highly doped erbium fibers

Óscar G. Calderón, Sonia Melle, M. A. Antón +3 more

We analyze the propagation regime of an amplitude-modulated $1536\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ signal when traveling along a highly doped erbium fiber pumped at $977\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ as a function of the fiber length. A propagation-induced transition from superluminal to subluminal propagation takes place along the fiber length which allows a change in regime solely based upon increasing the signal modulation frequency. This peculiar behavior is due to the interplay between pump absorption and pump-power broadening of the spectral hole induced by coherent population oscillations. The effect of ion density on this frequency-dependent regime change has been investigated.

Physical Review A•Nov 10, 2008•15 citations

Slow light propagation experiments in highly-doped erbium fibers

Sonia Melle, Óscar G. Calderón, F. Carreño +3 more

We experimentally study slow light propagation in highly-doped erbium fibers by using an amplitude modulated signal. The frequency of the maximum fractional delay shifts to smaller values when increasing ions density.

Slow and Fast Light (SL)•Jan 1, 2006•0 citations

Fast and slow light propagation in Erbium-doped fiber

Aaron Schweinsberg, Matthew S. Bigelow, Nikolay N. Lepeshkin +2 more

We demonstrate pump-power-tunable slow and superluminal pulse propagation at room temperature in an erbium-doped fiber amplifier. Signal pulses at 1550 nm were sent through an EDF with various pump intensities, obtaining signal group velocities as slow as 19,000 m/s and as fast as -16,000 m/s.

Frontiers in Optics•Jan 1, 2004•1 citation

Observation of superluminal and slow light propagation in erbium-doped optical fiber

Aaron Schweinsberg, Nikolay N. Lepeshkin, Matthew S. Bigelow +2 more

We observe both extremely slow and superluminal pulse propagation speeds at room temperature in an erbium-doped fiber (EDF). A signal at 1550 nm is sent through an erbium-doped fiber with varying powers of a 980 nm pump. The degree of signal delay or advancement is found to depend significantly on the pump intensity. We observe a maximum fractional advancement of 0.124 and a maximum fractional delay of 0.089. The effect is demonstrated both for a sinusoidally modulated signal and for Gaussian pulses. The ability to control the sign and magnitude of the pulse velocity could have important implications for applications in photonics.

Europhysics Letters (EPL)•Dec 1, 2005•185 citations

Slow and fast light propagation in erbium-doped fiber

Nikolay N. Lepeshkin, Aaron Schweinsberg, Matthew S. Bigelow +2 more

We study propagation of light pulses and modulation in an Er-doped fiber in the regimes of anomalously slow and superluminal group velocities. The pulses experience either delay or advancement depending on the pump power.

Quantum Electronics and Laser Science Conference•Dec 10, 2005•3 citations
We analyze the propagation regime of an amplitude-modulated 1536nm1536\phantom{\rule{0.3em}{0ex}}\mathrm{nm}1536nm signal when traveling along a highly doped erbium fiber pumped at 977nm977\phantom{\rule{0.3em}{0ex}}\mathrm{nm}977nm as a function of the fiber length. A propagation-induced transition from superluminal to subluminal propagation takes place along the fiber length which allows a change in regime solely based upon increasing the signal modulation frequency. This peculiar behavior is due to the interplay between pump absorption and pump-power broadening of the spectral hole induced by coherent population oscillations. The effect of ion density on this frequency-dependent regime change has been investigated.
We observe both extremely slow and superluminal pulse propagation speeds at room temperature in an erbium-doped fiber (EDF). A signal at 1550 nm is sent through an erbium-doped fiber with varying powers of a 980 nm pump. The degree of signal delay or advancement is found to depend significantly on the pump intensity. We observe a maximum fractional advancement of 0.124 and a maximum fractional delay of 0.089. The effect is demonstrated both for a sinusoidally modulated signal and for Gaussian pulses. The ability to control the sign and magnitude of the pulse velocity could have important implications for applications in photonics.