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Gain and phase recovery of optically excited semiconductor optical amplifiers

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3 Author(s)
Giller, R. ; Dept. of Phys., Univ. Coll. Cork, Ireland ; Manning, R.J. ; Cotter, D.

An investigation of the recovery dynamics of semiconductor optical amplifiers (SOAs) explains why the ultrafast component of the gain recovery is largely absent in the phase response. The time-resolved gain and phase dynamics of a bulk GaInAs SOA are measured using a pump-probe technique and differences between the gain and phase recoveries are highlighted and explained using Kramers-Kronig analysis. These have important implications for optical signal processing.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 9 )