Many applications of photonic crystals are based on photonic band gaps, and it would thus be very interesting to design a photonic crystal with the largest band gap for a given dielectric contrast.
光子晶体最主要的特性是光子禁带：大多数光子晶体的应用都是基于禁带效应，因此设计具有尽可能大的禁带的光子晶体具有重要的意义。
The results indicate that there is a smooth and isolated band in the band gap if photonic crystal has a dot defect.
计算结果表明，在二维光子晶体中引入单独的点缺陷后，在原来完整的光子晶体的禁带中会出现平坦孤立的能带。
Photonic crystal is a new kind of materials with photonic band gap.
光子晶体是一种具有光子能带及能隙的新型材料。
FDTD method has less calculation, precision result, and dynamic distribution of electromagnetic, so it is suitable for calculating photonic crystal band gap.
FDTD方法计算量小，结果较为精确，还可模拟电磁场的动态分布，很适合计算光子晶体光子带隙。
The dispersion curves showed that plasma photonics crystal has the structure of photonic energy band and energy gap.
从得到的色散曲线看到等离子体光子晶体具有光子能带和能隙结构。
A photonic crystal slab has an optimal thickness, which makes the photonic band gap maximum.
平板光子晶体存在一个最佳厚度，使其导模带隙最大。
By comparison of injection wave type, it can be concluded that te type wave is easier to be limited to transmit in the structure of the band gap photonic crystal fiber which designed in this article.
通过对注入波类型的比较，可以得出结论，TE类型的波更易于限制在本文所设计的这种结构的带隙型光子晶体光纤中进行传播。
The photonic band gap (PBG) property of a one-dimensional photonic crystal with a defect layer under pressure is studied, accordingly an improved model of pressure sensor is described.
通过研究带缺陷的一维光子晶体受压力后光带隙性能的变化，提出了改进型光子晶体压力传感器的理论模型。
The investigation results show that the band gap of the photonic crystal made of LHM is wide and multi-transmittance peaks appear in the forbidden band.
研究结果表明：一维右手材料和左手材料构成的光子晶体具有宽禁带的特点，禁带中出现多个共振透射峰。
The affection of TM is discussed when the dielectric cylinder are rotated. The result is that not only the crystal rotational symmetry but also the dielectric constant can affect the band gap of TM.
讨论了旋转操作下TM模式带隙的变化情况，通过计算发现TM模式的带隙不仅受到晶体旋转对称性的影响同时也受内部结构介电常数的影响。
The optical element forms dual mode structure in low symmetry. The invention raises structural performance band gap of photon crystal, and obtains even structure of photon crystal in large area.
能形成低对称性的双模结构，有利于光子晶体带隙结构性能的提高，获得大面积均匀的光子晶体结构。
For all three kinds of three-dimensional photonic crystal structures, their band gap width and band gap ratio can be improved with the increase of dielectric constant ratio.
对于不同的三维光子晶体结构，随着介电常数比的增大，完全禁带的宽度和带隙率也会随着增大。
This kind of material is called photonic crystal or photonic lattices, but there are photonic band-gap in completed photonic lattices.
这种周期性介电结构材料称为光子晶体或光子晶格。
While the proposed photonic-crystal does not exhibit complete band-gap across the entire Brillouin zone, a stable defect exists provided we carefully tune the structural parameters.
分析表明，虽然该光子晶体不具有完全光子带隙，但通过调整结构参数，仍可以得到稳定的缺陷模式。
In chapter two, the dispersion of a type of slow-wave structure and the photonic crystal band gap structures are discussed in this chapter.
第三章先介绍了一种新型的全金属慢波结构，并对具有光子晶体带隙结构的慢波结构作了分析。
Both structures are one-dimensional photonic crystal with incomplete photonic band gap.
这两种结构属于紫外线波段一维不完全带隙光子晶体。
Although the energy loss of ordinary multi-layer photonic crystal structures is low, the band gap is usually limited, there is also wide-wide Angle high anti-band hard.
普通多层膜系结构光子晶体的禁带内能量损失较低，可是禁带宽度通常有限，而且出现较宽的全角高反带很难。
Based on photonic band gap theory and plane wave expansion method, the effect of liquid crystal on the conduction change of PCF and filtering properties are researched.
基于光子带隙理论，利用平面波展开法对填充液晶前后光子晶体光纤传导机制的转变进行了探讨，研究了填充液晶对光子晶体光纤滤波性能的影响。
The invention relates to a method to prepare composite band-gap colloidal photonic crystal film through adopting an ink-jet printing method.
本发明涉及使用喷墨打印方法制备复合带隙胶体光子晶体膜的方法。
The photon crystal has the photonic band, and the photon band possibly has the photon band gap.
光子晶体是折射率（或介电常数）呈现周期性变化的、以具有光子带隙为特征的人造晶体材料。
First, we propose and analyze a novel 3-dimensional photonic-crystal which is capable of further exploring the design flexibility of any band-gap structure.
论文首先提出了一种具有更高灵活性的三维光子晶体结构，并分析了其能带结构和缺陷模特性。
The band gap and polarization properties in quasi-periodic 1d photonic crystal with refraction index gradually increasing or decreasing was studied.
提出了折射率分别递增或递减的准周期结构一维光子晶体，研究了其带隙结构和偏振特性。
With the boundary conditions satisfied by the electromagnetic fields in the interface between the crystal and the clad, the characteristic equation to describe the band gap structure is deduced.
根据电磁场在包层边界应满足的基本关系，建立了描述其带隙结构的特征方程，给出了特征方程迭代求解的算法描述，为电磁波传播特性数值仿真分析提供了理论基础。
The calculated results demonstrate that the square crystal can obtain higher quality factor, though its band-gap width is narrower than…
结果表明，尽管四方晶体的带隙宽度比三角晶体窄，但能获得更高的品质因子，更有利于提高滤波分辨率和耦合效率。
The calculated results demonstrate that the square crystal can obtain higher quality factor, though its band-gap width is narrower than…
结果表明，尽管四方晶体的带隙宽度比三角晶体窄，但能获得更高的品质因子，更有利于提高滤波分辨率和耦合效率。
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