Polarization anisotropy in strained quantum-wire structures considering the strain relaxation effect

Polarization dependences of spontaneous emission spectrum of strained quantum wires (Q-wire) are studied theoretically considering the effects of strain relaxation in vertically stacked multiple wires. An anomalous dependence of polarization anisotropy on compressive strain in active regions, barrier tensile strain, wire width and the number of vertically stacked layers is predicted which may be explained in terms of band mixing due to strain relaxation.