| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1553615 | Superlattices and Microstructures | 2014 | 9 Pages |
•The SPs of a 1D PC containing graphene sheets are investigated theoretically.•The results show that the characteristics of the SPs depend on the optical properties of the graphene sheets.•It is found that graphene induced SPs are more localized than the SPs of the Bragg gaps.
We investigated theoretically the existence of surface polaritons (SPs) at the interface of a one-dimensional photonic crystal containing graphene monolayers. It is shown that the structure has a new type of the photonic band gap in the THz region which is strictly omnidirectional for the TM-polarization and can support the SPs for both TM-polarization and TE-polarization. The results show that the characteristics of the SPs depends on the optical properties of the graphene sheets which can be controlled by a gate voltage. We plotted the electromagnetic field profiles of the SPs at the frequency range of the graphene induced band gap and a conventional Bragg gap of the structure. It is found that the SPs at the graphene induced band gap are more localized than the SPs at the Bragg gaps.
