Kh. Chung et Ji. Shim, A new polarization-insensitive 1.55-mu m InGaAs(P)-InGaAsP multiquantum-well electroabsorption modulator using a strain-compensating layer, IEEE J Q EL, 35(5), 1999, pp. 730-736
In a conventional polarization-insensitive multiquantum-well electroabsorpt
ion modulator, it is normal to apply tensile and compressive strain on the
well and the barrier, respectively. But the main disadvantages of such a st
ructure are a low conduction band offset (0.04-0.06 eV), a high heavy-hole
band offset (0.20-0.24 eV), and a relatively large well thickness (110-120
Angstrom). We propose a new method of overcoming these disadvantages by pla
cing a tensile strain on both the well and the barrier and compensating for
them with a compressive strained intrinsic layer.