Complex-valued time-resolved transmission characteristics of a semiconductor optical amplifier are measured using a spectrogram technique. A relatively simple traveling-wave density matrix model is implemented that accurately captures the evolution of complex index due to stimulated emission and carrier heating. The model shows good agreement with experimental spectrogram data.
Published in:
Photonics Technology Letters, IEEE
(Volume:19
,
Issue:
14
)
Date of Publication: July15, 2007