Abstract
We fabricate a quantum-dot (QD) superlumenescent diode (SLD) integrated
with a semiconductor optical amplifier (SOA). The integrated device exhibits
coordinative working between the SLD and SOA when the two sections are pumped
with a series of different currents. However, the SLD source affects the device
behavior not via the amount of energy supplied by itself, but via an existing
double-pass gain throughout the whole structure. With the help of a QD device
model, this behavior is numerically analyzed which explains the origin of
competition between different QD states in the emission spectra as well as
the strong power-control capability of the SLD source.
© 2012 IEEE
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