Search - Photonic crystal air-holes

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[ActiveX/DCOM/ATL] 2d DL : 0: The dispersion relation and the optical transmittance of a two-dimensional photonic crystal composed of the hexagonal array of cylindrical air holes fabricated in a dielectric slab were analyzed by group theory and the numerical calculation based on the ﬁ nite-difference time-domain method. The decay rate of the leaky modes that exist above the light line ~the dispersion relation in air! in the band diagram was also evaluated, from which the absence of the coupling between certain internal eigenmodes and the external radiation ﬁ eld was shown. This phenomenon was related to symmetry mismatching by the group-theoretical argument.
Date : 2008-10-13 Size : 180.73kb User : Qtai
[ActiveX/DCOM/ATL] 2d DL : 0: The dispersion relation and the optical transmittance of a two-dimensional photonic crystal composed of the hexagonal array of cylindrical air holes fabricated in a dielectric slab were analyzed by group theory and the numerical calculation based on the ﬁ nite-difference time-domain method. The decay rate of the leaky modes that exist above the light line ~the dispersion relation in air! in the band diagram was also evaluated, from which the absence of the coupling between certain internal eigenmodes and the external radiation ﬁ eld was shown. This phenomenon was related to symmetry mismatching by the group-theoretical argument. -The dispersion relation and the optical transmittance of a two-dimensional photonic crystal composed of thehexagonal array of cylindrical air holes fabricated in a dielectric slab were analyzed by group theory and thenumerical calculation based on the
Date : 2025-07-11 Size : 180kb User : Qtai
[Graph program] PCFairhole DL : 0: 用于绘制光子晶体光纤空气孔形状的可扩展程序。-This is a simple and expandable programm for the air hole shape of Photonic crystal fiber
Date : 2025-07-11 Size : 79kb User : 江鹏
[Algorithm] square_lattice_circular_air DL : 0: 这个程序可以用于四方晶格光子晶体空气孔柱的能带计算。给出了解析的折射率分布 u1=[1,0,0] u2=[0,1,0] u3=[0,0,1] -This code can be used in band structure of photonic crystal. It give out the dielectric distribution of circular air holes.
Date : 2025-07-11 Size : 13kb User : steven
[Algorithm] tri_lattice_circular_air DL : 0: 这个程序可以用于三角晶格空气孔光子晶体的能带计算。给出了解析的折射率分布 u1=[1,0,0] u2=[1/2,sqrt(3)/2,0] u3=[0,0,1] -This code can be used in band structure of triangular lattice rod photonic crystal. It give out the dielectric distribution of circular air holes.
Date : 2025-07-11 Size : 13kb User : steven
[File Format] Example2-Triangular-lattice DL : 0: 用平面波展开法计算的二维光子晶体空气孔结构，TM和TE模式的能带图，matlab程序源代码-With the plane wave expansion method to calculate the two-dimensional photonic crystal structure of air holes, TM and TE modes of the energy band diagram, matlab source code
Date : 2025-07-11 Size : 8kb User : lubo
[Software Engineering] Sciencedirect_articles_19Apr2016_02-41-12.873 DL : 0: photonic crystal fiber (PCF) made of silicon is proposed and numerically optimized with both ultrahigh birefringence and nonlinearity. By introducing an elliptical lowindex slot in the core region, one of the orthogonally polarized fundamental modes can be confined in the low-index region due to the discontinuity of its electric field at the interface of the slot and the surrounding material, while the other fundamental mode is dominated by the modified total internal reflection (MTIR) induced by air holes of the cladding, leading to a birefringence as high as 101 order. On the other hand, benefiting the tight field confinement and highly nonlinear material, nonlinear coefficients up to 1068 W1 m1 and 162 W1 m1 can be achieved for the slot mode and the MTIR mode, respectively.-photonic crystal fiber (PCF) made of silicon is proposed and numerically optimized with both ultrahigh birefringence and nonlinearity. By introducing an elliptical lowindex slot in the core region, one of the orthogonally polarized fundamental modes can be confined in the low-index region due to the discontinuity of its electric field at the interface of the slot and the surrounding material, while the other fundamental mode is dominated by the modified total internal reflection (MTIR) induced by air holes of the cladding, leading to a birefringence as high as 101 order. On the other hand, benefiting the tight field confinement and highly nonlinear material, nonlinear coefficients up to 1068 W1 m1 and 162 W1 m1 can be achieved for the slot mode and the MTIR mode, respectively.
Date : 2025-07-11 Size : 10.76mb User : jack
[Software Engineering] 06814776 DL : 0: In contrast with conventional optical fibers, photonic crystal fibers (PCF) present a diversity of new and improved features, which provide several new applications such as nonlinear fiber optics, fiber lasers, supercontinuum generation, and fiber sensors. In many applications of all-optical signal processing, optical fibers with both high birefringence and high nonlinearity are desired, because many nonlinear effects in optical fiber are polarization-sensitive, and maintaining the state of polarization (SOP) is essential for good performance. In particular, with enhanced nonlinearity, both the footprint and power-consumption of optical device can be reduced. By carefully arranging the air holes of PCF, high birefringence in excess of 103 can be readily achieved
Date : 2025-07-11 Size : 640kb User : jack