A cylindrical chiral-graphene-dielectric waveguide structure is proposed. Correspondingly, characteristics of surface plasmonic mode are theoretically investigated, including dispersion relation, intensity, phase and polarization distribution. The proposed waveguide can only support the vortex modes with the hybrid polarization distribution, which originates from the spin-momentum locking of evanescent electromagnetic waves. The circular birefringence of chiral materials releases the degeneracy between same-order vortex modes. In addition, the number of modes can be controlled by changing the radius of the dielectric nanowire and the Fermi level of graphene. The effective index and corresponding propagation length of the mode are sensitive to the chiral parameter. We believe the proposed waveguide can find some potential applications in multiplex communication, chiral sensing and the fabrication of tunable nano-photonic devices.

A novel surface plasmonic waveguide structure composed of chiral medium and 2D material is proposed. The universal direction-dependent dispersion relation is obtained, which covers the combinations between 2D materials with in-plane isotropy or anisotropy and the surroundings with or without chirality. The tunability of the behavior of surface plasmon polaritons with the chirality of environment and the doping level are investigated. The averaging effect of chirality in both sides of 2D material is unveiled. Besides, the transverse spin of SPPs in the Chiral-2D material structure is explored and the asymmetric distribution of the transverse spin depends mainly on the contribution from the magnetic spin instead of the electric spin. These features are advantageous for the manufacture of novel photonic devices and the development of sensors techniques for the chiral environment.

We propose a design of anti-resonant fiber by introducing the chiral material into the inner regions of the six germanium-doped silica glass cladding tubes, which can support the operation of single-mode single left-handed circular polarization in the communication band from 1.540 to 1.605 μm. Especially, the loss reaches a minimum value of 0.009 dB/m at 1.550 μm. The sign of chiral parameter can control the handedness of polarization in the operation of single-mode single-circular polarization. In addition, the anti-resonant fiber possesses a good bending resistance performance. The minimum bending radius of the anti-resonant fiber is 10 cm to maintain the single-mode single left-handed circular polarization for 1.550 μm. We believe the novel anti-resonant fiber can find applications in optical communication, polarization imagining and chiral sensing.