In this paper, a theoretical model of the novel all-optical polarization switch based on nonresonant Stark effect active photonic band gap was investigated. The change of active photonic band gap reflection spectra of the all-optical switch under the pump pulse was simulated; the contrast ratio as a function of control-signal delay and pump pulse intensity, the impact of disorder in the periodicity of the quantum wells and the drift of refractive index on the formation of the resonant photonic band gap were simulated also. Furthermore, due to the fast attenuation the superradiant mode, the sample fully recovers after the passage of the pump pulse for near-resonant pumping, making possible a switch with terahertz bandwidth. The active photonic band gap is very sensitive to the change of the exciton resonant frequency, so the pump pulse energy of the switch is small than that of the normal quantum wells switch.