复合周期特异介质光子晶体异质结的谐振模

一维异质结光子晶体包含两个基本单元结构,其中每个单元都由一种特异介质和常规介质层叠构成.利用传输矩阵法,通过数值模拟得出两种不同异质结光子晶体的透射谱.在1.0 ～ 10.0 GHz频率范围内,(AB)6(CD)4结构的透射谱中出现了三个光子带隙,但带隙中没有谐振模；而在(《AB)6(CD)4)2结构的透射谱中,在三个光子带隙内均出现谐振模.在第一带隙内,随着入射角的增大,TE波和TM波的谐振模数目均减少且谐振模发生频移.其中对于TE波,在2.40 GHz附近出现了全向谐振模.

Resonant modes in one-dimensional photonic crystal hetero-structures with metamaterials

The photonic crystal(PC)hetero-structure is a multilayer system formed by a series of multiple one-dimensional PCs.Each PC is composed of a metamaterial and conventional material.Transmission spectra of two different structures were simulated numerically with transfer matrix.In the frequency region from 1.0 to 10.0 GHz,there are three photonic band-gaps(PBG)for the structure of(AB)6(CD)4,but there is no resonant mode,in the same frequency range,resonant modes exist in each PBG for the structure of((AB)6(CD)4)2.For the frequency regime of first PBG,as the incident angle increases,the number of TE wave and TM wave resonant modes decrease and the frequency shift of resonant modes happens.The omnidirectional resonant mode is found at 2.40 GHz for TE wave but not TM wave.