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

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Melle _ modulation frequency-OSA-2008.pdf (409.61 KB)
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https://doi.org/10.1364/OL.33.000827
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Publication Date
2008-04-15
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Optical Society of America
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Abstract
We report a change from sub- to superluminal propagation upon increasing the modulation frequency of an amplitude-modulated 1550 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.
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Received December 11, 2007; revised March 4, 2008; accepted March 6, 2008; posted March 14, 2008 (Doc. ID 90388); published April 11, 2008
UCM subjects
Óptica (Física) , Fibras y comunicación óptica , Óptica no líneal
Unesco subjects
2209.19 Óptica Física , 2209.5 Fibras ópticas , 2209.13 Óptica no lineal
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https://hdl.handle.net/20.500.14352/52222
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