从理论和实验相结合的角度,研究了一维液晶光子晶体透射谱特性。实验给出了不同液晶缺陷层电压下的透射谱,电压范围在0～10 V内,透射峰的相对透过率变化为48%～18%,禁带宽度290 nm调谐范围88 nm,透射峰半峰全宽7 nm。理论计算和实验结果比较接近,这些特性可以使一维液晶光子晶体用于调谐光滤波器和光开关。 From the perspective of theory and experiment, the transmission spectra of one-dimensional liquid crystal photonic crystals are studied. The experimental results show that the transmission spectra under different voltages of liquid crystal defects are within the range of 0-10 V, the relative transmittance of the transmission peak changes from 48% to 18%, the band gap is 290 nm and the tuning range is 88 nm. The transmission peak Full width at half maximum 7 nm. Theoretical calculations and experimental results are close, these characteristics can make one-dimensional liquid crystal photonic crystal used to tune the optical filter and optical switch.