A. Godefroy et al., 1.55-MU-M POLARIZATION-INSENSITIVE OPTICAL AMPLIFIER WITH STRAIN-BALANCED SUPERLATTICE ACTIVE LAYER, IEEE photonics technology letters, 7(5), 1995, pp. 473-475
A polarization insensitive (sensitivity <1 dB) semiconductor optical a
mplifier has been realized at 1.55 mu m. The active layer consists of
a strain-balanced superlattice structure. Gain polarization insensitiv
ity on a large bandwidth (60 nm) together with a 22.5-dB signal gain a
nd a 11-dBm polarization-insensitive saturation output power are obtai
ned.