Optical features of three one dimensional photonic crystals are studied theoretically. First structure which consists of SiO₂ slabs separated by graphene sheets is considered as an ideal crystal with tunable response. Adding anisotropic liquid crystal (LC) layers inside the ideal structure, two defective crystals are also proposed to assess their potential of being used in photonics. Dependence of the crystals transmittance to periods of the layers as well as size of the SiO₂ and LC slabs are studied at first. Extracting the optimum values for these structural parameters, tunability of the optical response of the proposed crystals by using externally controllable parameters such as: optical axis of the anisotropic layer, light incident angle, crystal temperature and graphene layer chemical potential are evaluated systematically. Results clearly reflect that all suggested crystals might be useful to support the increasing demands of optical integrated circuit technology for adjustable photonic elements.

从理论上研究了三个一维光子晶体的光学特性。由被石墨烯片隔开的SiO ₂平板组成的第一结构被认为是具有可调响应的理想晶体。在理想结构内部添加各向异性液晶（LC）层，还提出了两种有缺陷的晶体来评估其在光子学中的潜力。晶体透射率与层周期以及SiO ₂尺寸的关系首先研究LC平板。提取这些结构参数的最佳值，通过使用外部可控制的参数（例如：各向异性层的光轴，入射角，晶体温度和石墨烯层的化学势）来评估所提出晶体的光学响应的​​可调谐性。结果清楚地表明，所有建议的晶体都可能有助于满足光学集成电路技术对可调光子元件不断增长的需求。