Ik. Czajkowski et al., STRAIN-COMPENSATED MQW ELECTROABSORPTION MODULATOR FOR INCREASED OPTICAL POWER HANDLING, Electronics Letters, 30(11), 1994, pp. 900-901
InGaAsP MQW electroabsorption modulators with compressive strain in th
e wells and tensile strain m the barriers provide easer escape of phot
ogenerated holes and operate at higher intensities before suffering sa
turation. Hole escape from wells is enhanced by a reduced energy diffe
rence between heavy-hole states in the well and light-hole states in t
he barrier.