Reducing pulse distortion in fast-light pulse propagation through an erbium-doped fiber amplifier |
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Authors: | Shin Heedeuk Schweinsberg Aaron Gehring George Schwertz Katie Chang Hye Jeong Boyd Robert W Park Q-Han Gauthier Daniel J |
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Institution: | The Institute of Optics, University of Rochester, Rochester, NY 14627, USA. |
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Abstract: | When a pulse superposed on a cw background propagates through an erbium-doped fiber amplifier with a negative group velocity, either pulse broadening or pulse compression can be observed. These effects can be explained in terms of two competing mechanisms: gain recovery and pulse spectrum broadening. The distortion of the pulse shape caused by these effects depends on input pulse width, pump power, and background-to-pulse power ratio. With the proper choice of these three parameters, we can obtain significant pulse advancement with minimal pulse distortion. |
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