Zhou Feng, Chen Heming. Research on transmission spectrum of two-dimensional graded photonic crystals in terahertz waveband[J]. 2011,(3):51-53. DOI: 10.13756/j.gtxyj.2011.03.004.
This paper designs three kinds of graded photonic crystal structures by changing the gaps between dielectric columns
radius of dielectric columns and dielectric constant
calculates the transmission spectrum by using the Finite Difference Time Domain(FDTD) method and compares and analyzes photonic crystal structures with different forms of graded combinations.Simulation results show that different combinations have different effects on photonic bandgap and can obtain still larger bandgap width than one-dimensional photonic crystals.