Abstract
A theoretical analysis of the small-signal frequency response (SSFR) of
a wavelength converter based on cross-gain modulation in a semiconductor
optical amplifier with a finite waveguide loss is presented. We use a transfer
function formalism to explain the resonant behavior of the frequency response.
The limitations to the magnitude of the spectral overshoot are also accounted
for. Operating with the data and CW signals in a co-propagating
configuration,we find that the resonance only exists for a finite waveguide
loss. In a counter-propagating scheme, a resonance can exist regardless of the
presence of loss.
© 2000 IEEE
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