The linear dispersion relation around certain points in the Brillouin zone of optical periodic structures, which is often called (photonic) Dirac cones, has been attracting considerable interest during the last five years [1], since it can realize interesting optical phenomena such as unidirectional propagation of surface modes, optical simulation of Zitterbewegung, pseudo-diffusive transmission of optical waves, scatter-free waveguides, and lenses of arbitrary shapes. In particular, Huang et al. [2] clarified that isotropic Dirac cones in the Brillouin-zone center can be created by accidental degeneracy of two modes for two-dimensional square and triangular dielectric photonic crystals of C4v and C6v symmetries. On the other hand, we showed for metamaterials characterized by well-defined electromagnetic resonant states localized in their unit structures that the combination of A1 and E modes of the square lattice of C4v symmetry and the combination of A1g and T1u modes of the simple cubic lattice of Oh symmetry create isotropic Dirac cones [3], while the combination of E1 and E2 modes of the triangular lattice of C6v symmetry leads to isotropic double Dirac cones [4].

© 2013 IEEE

PDF Article
More Like This
A novel photonic structure with a nodal line of Dirac cones, and a photonic topological insulator that emerges from it

Ran A. Gladstein Gladstone and Gennady Shvets
JW2A.114 CLEO: Applications and Technology (CLEO_AT) 2018

Integrated impedance-matched photonic Dirac-cone metamaterials

Yang Li, Shota Kita, Philip Muñoz, Orad Reshef, Daryl Vulis, Marko Loncar, and Eric Mazur
FTu4C.5 CLEO: QELS_Fundamental Science (CLEO_QELS) 2015

Inverse Design of a Polarization-Independent Dirac-Cone Zero-Index Metamaterial

Lysander Christakis, Zin Lin, Yang Li, Eric Mazur, Alejandro Rodriguez, and Marko Loncar
JW2A.18 CLEO: Applications and Technology (CLEO_AT) 2016


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription