Hi,
A high performance of the designed wideband travelling SOA is obtained and analyzed with the optimized values of injection current, optical confinement factor, input power and active length.
I also agree to the points of Hamza Ali Abbas Khan, I think that wideband travelling wave semiconductor optical amplifier in optical communication are being used to investigate the importance of travelling-wave effects and gain/phase dynamics in predicting device behaviour.
Traveling wave (TW) SOA, which relies on a single passgain, ideally has no mirror reflections and is the most desirable layout. This is
typically achieved by either AR coatings on the cleaved mirror facets and/or a tilted
waveguide with respect to the facets.
The effect of these reflections
on a TW amplifier is called “gain ripple.” Any design that deliberately uses this feature
to enhance the gain due to cavity resonance is called a Fabry-Perot (FP) amplifier.
Thnaks,