Zero-n̄ gaps of photonic crystals consisting of positive and negative index materials in microstrip transmission lines
Zero-n̄ gaps of photonic crystals consisting of positive and negative index materials in microstrip transmission lines
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DOI：
10.1088/0022-3727/40/8/024
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发表时间：
2007-04
期刊：
影响因子：
--
通讯作者：
Liwei Zhang;Yewen Zhang;Li He;Zhi-guo Wang;Hong-qiang Li;Hong Chen
中科院分区：
文献类型：
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作者：
Liwei Zhang;Yewen Zhang;Li He;Zhi-guo Wang;Hong-qiang Li;Hong Chen
利用常规微带线单元和左右手复合传输线单元，物理制备了由正负折射率材料组成的一维光子晶体和准周期结构。理论上证明了这种结构具有随标度长度变化而不变的零隙，并且零隙的边缘分别由和决定。我们实验证明了零隙对标度的无关性，并通过构造准周期结构确定了它们的关键作用。实验测量结果与模拟结果吻合较好。
One-dimensional photonic crystals and quasiperiodic structures composed of positive and negative index materials were physically fabricated by using conventional microstrip line units and composite right/left-handed transmission line units. It is theoretically shown that the structures possess zero- gaps which are invariant with a change in the scale length, and the edges of the zero- gap are determined by and , respectively. We experimentally demonstrate the independence of the zero- gaps on the scaling by augmenting the respective length by the same factor and confirm the crucial function of and by constructing quasiperiodic structures. The experimental measurements agree well with the simulations.