Hongfei Liu

TL;DR: The proposed photonic quasi-crystal fiber with high birefringence maintains a high nonlinear coefficient and low confinement loss, which is two orders of magnitude larger than that of the conventional polarization-maintaining fibers and hardly affected by the incident wavelength.

TL;DR: In this paper, a photonic quasi-crystal fiber (PQF) with a near zero flattened dispersion in the 1450-1650-nm optical telecommunication window is proposed.

TL;DR: In this paper, a high-birefringence photonic quasi-crystal fiber (HB-PQF) based on SiO2 was proposed and the relation- ships between bireringence and structure parameters were investigated by finite difference beam propagation method, and with the optimization of fiber structure parameters, the birerringence was 1.4207 × 10 −2, which is two orders of magnitude higher than the normally used fiber when the wavelength is 1.55 μm.

TL;DR: In this article, a decagonal photonic quasi-crystal (PQC) flat lens was designed to turn an incident terahertz (THz) plane wave into a hollow beam easily and flexibly.

TL;DR: In this article, the effects of material/structure parameters of photonic crystal (PhC) parallel waveguides on the coupling length are investigated, and it is shown that increasing the effective relative permittivity of the PhC leads to a downward shift of the photonic bandgap and a variation of coupling length.