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

Óscar G. Calderón | Zendy; Sonia Melle | Zendy; M. A. Antón | Zendy; F. Carreño | Zendy; Francisco Arrieta-Yáñez | Zendy; E. Cabrera | Zendy

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

Author(s) -

Óscar G. Calderón,

Sonia Melle,

M. A. Antón,

F. Carreño,

Francisco Arrieta-Yáñez,

E. Cabrera

Publication year - 2008

Publication title -

physical review a

Language(s) - English

Resource type - Journals

eISSN - 1094-1622

pISSN - 1050-2947

DOI - 10.1103/physreva.78.053812

Subject(s) - physics , superluminal motion , erbium , amplitude , fiber , optics , modulation (music) , atomic physics , absorption (acoustics) , doping , slow light , condensed matter physics , quantum mechanics , chemistry , organic chemistry , photonic crystal , acoustics

We analyze the propagation regime of an amplitude-modulated 1536 nm signal when traveling along a highly doped erbium fiber pumped at 977 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.

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