Delay limit of slow light in semiconductor optical amplifiers

In contrast to absorbers, where the delay time via wave mixing saturates to its maximum with increasing device length due to decay of pump power along the device, in semiconductor optical amplifiers (SOAs) the delay time increases with the device length and is limited by the corresponding growth of...

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Bibliographic Details
Published in:IEEE photonics technology letters 2006-03, Vol.18 (6), p.731-733
Main Authors: Uskov, A.V., Sedgwick, F.G., Chang-Hasnain, C.J.
Format: Article
Language:English
Subjects:
All-optical buffer
Amplification
Delay
Delay effects
Devices
Dispersions
Frequency
Gain
Optical buffering
Optical mixing
Probes
Propagation delay
Pumps
Refractive index
semiconductor optical amplifier (SOA)
Semiconductor optical amplifiers
Slow light
slow light propagation
Stimulated emission
wave mixing
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Summary:In contrast to absorbers, where the delay time via wave mixing saturates to its maximum with increasing device length due to decay of pump power along the device, in semiconductor optical amplifiers (SOAs) the delay time increases with the device length and is limited by the corresponding growth of the SOA gain, which can lead to unacceptable amplified stimulated emission in the SOA. The number of pulses which can be stored in an SOA, defined by the gain and group velocity dispersion, also is given ultimately by this SOA gain limitation, and is estimated between one and two.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2006.871147