Abstract
Short-pulse propagation in semiconductor optical amplifiers (SOAs) has
been widely studied for applications in optical signal processing and optical
communications areas. Even though it is possible to integrate differential
equations numerically, such implementations may not provide adequate insight
into the device operation. We propose a systematic way to construct analytical
solutions for the gain-recovery dynamics of SOAs and show excellent agreement
with numerically integrated results. Our approach makes use of the multiple-scale
technique. The main contribution of this work is to put earlier heuristic
approaches into a firm theoretical base so that approximate analytical solutions
for carrier-recovery dynamics can be systematically constructed for different
variants of SOA models. We derive analytical solutions for the signal gain
and pulse-energy gain at an arbitrary point with the SOA waveguide. Surpassing
previous work in this area, we also show that it is possible to obtain analytical
solutions when waveguide attenuation is not negligible.
© 2008 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription