利用传输矩阵法，研究了垒层周期不对称度对光量子阱透射谱的影响。结果表明：当垒层周期不对称度为零时，光量子阱透射峰随着垒层周期数的增大而变得精细，但其透射率均为100%不变；当垒层周期不对称度为不等于零的恒定值时，光量子阱透射峰的透射率低于100%，但随着垒层周期数的增大，透射峰仅变得精细而透射率不变；光量子阱透射峰的透射率随着不对称度增大而下降，而且不对称度越大，透射率下降越快，同时透射峰变窄的速度也越快。垒层周期不对称度对光量子阱透射谱的影响规律可为光子晶体模型的构造和设计制备等提供方法和依据。

The effect of barrier layer periodicity asymmetry on photonic crystal quantum well transmission spectrum is studied by transfer matrix method. The results show that when the periodicity asymmetry is 0, transmission peaks become sharper as the barrier layer periodicity increases, but the transmittance is constantly equal to 100%. When the barrier layer periodicity asymmetry is any nonzero constant，the transmittance is below 100%; while with the increase of barrier layer periodicity, the transmission peaks sharpen with a constant transmittance. The transmittance of transmission peaks decreases with the barrier layer periodicity asymmetry increasing, and the greater asymmetry is, the faster the transmittance decreases, and the faster the transmission peaks narrow. These properties can provide theoretical basis for construction, preparation and design of the photonic crystal model.