• 文献标题:   Tunable Dual- and Multi-Channel Filter Based on Cantor Photonic Crystals Embedded With Graphene
  • 文献类型:   Article
  • 作  者:   CHEN XL, ZHANG P, ZHONG D, DONG JJ
  • 作者关键词:   graphene, optical filter, chemical, dielectric, electric potential, conductivity, photonic, crystal, cantor sequence, graphene, optical fractal, photonic crystal, photonic filter
  • 出版物名称:   IEEE ACCESS
  • ISSN:   2169-3536
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1109/ACCESS.2023.3239510
  • 出版年:   2023

▎ 摘  要

We theoretically investigate the tunable dual- and multi-channel filter in one-dimensional aperiodic photonic crystals (PCs) embedded with graphene. The dielectrics slabs arrayed alternately submit to the Cantor sequence rule and graphene sheets are local at the interfaces of dielectrics layers. Cantor PCs are fractal structures and support a series of discrete resonant channels in transmission spectra, viz. fractal states. Consequently, dual- and multi-filtering channels could be achieved in the compound systems. The central wavelength of each channel and its value of transmission could be modulating by the chemical potential of grapheme and the incident angle as well. It shows that the dual-channel amplitude of transmission can be varied by over 100% and the multiple channels could be switched on and off by the chemical potential of graphene. This study will be very helpful in designing tunable optical filters.