Drilled alternating-layer structure for three-dimensional photonic crystals with a full band gap

2000 ◽  
Vol 18 (6) ◽  
pp. 3510 ◽  
Author(s):  
Eiichi Kuramochi ◽  
Masaya Notomi ◽  
Toshiaki Tamamura ◽  
Takayuki Kawashima ◽  
Shojiro Kawakami ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Layer Structure ◽  
Three Dimensional ◽  
Full Band

Electromagnetic properties of photonic crystals with diamond structure containing defects

2003 ◽  
Vol 18 (9) ◽  
pp. 2214-2220 ◽  
Author(s):  
Shingo Kanehira ◽  
Soshu Kirihara ◽  
Yoshinari Miyamoto ◽  
Kazuaki Sakoda ◽  
Mitsuo Wada Takeda
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Three Dimensional ◽  
Expansion Method ◽  
Electromagnetic Properties ◽  
Diamond Structure ◽  
Multiple Reflections ◽  
Air Cavity ◽  
Photonic Band

Three-dimensional photonic crystals with a diamond structure, which are composed of the TiO2-based ceramic particles dispersed in an epoxy lattice, were fabricated by stereolithography. The diamond structure showed a photonic band gap in the 14.3–17.0 GHz range along the Γ-K 〈110〉 direction, which is close to the band calculation using the plain wave expansion method. Two types of lattice defects—air cavity and dielectric cavity—were introduced into the diamond structure by removing a unit cell of diamond structure or inserting a block of the lattice medium into the air cavity. The transmission of millimeter waves affected by multiple reflections at the defects was measured in the photonic band gap. Resonant frequencies in the defects were calculated and compared with the measurement results.

Selective Transmission of Electromagnetic Wave by Using Diamond Photonic Crystals with Graded Lattice Spacing

2006 ◽  
Vol 45 ◽  
pp. 1139-1144
Author(s):  
Soshu Kirihara ◽  
Yoshinari Miyamoto
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Electromagnetic Waves ◽  
Lattice Spacing ◽  
Three Dimensional ◽  
Dielectric Constants ◽  
Microwave Antenna ◽  
Diamond Structure ◽  
Band Calculation ◽  
Graded Lattice

Three-dimensional electromagnetic or photonic crystals with periodic variations of the dielectric constants were fabricated by using a rapid prototyping method called stereolithography. Millimeter-order epoxy lattices with a diamond structure were designed to reflect electromagnetic waves by forming an electromagnetic band gap in GHz range. Titania based ceramic particles were dispersed into the lattice to control the dielectric constant. The diamond lattice structures formed the perfect band gap reflecting electromagnetic waves for all directions. The location of the band gap agreed with the band calculation using the plane wave propagation method. The diamond structures with graded lattice spacing were successfully fabricated as well, resulting in the directional transmission of microwaves. The stretching ratio of the lattice spacing in the crystal structure was changed according to the electromagnetic band calculation. A microwave antenna head composed of the diamond structure with graded lattice spacing was fabricated which achieved the unidirectional transmission.

scholarly journals Signature of a three-dimensional photonic band gap observed on silicon inverse woodpile photonic crystals

2011 ◽  
Vol 83 (20) ◽  
Author(s):  
Simon R. Huisman ◽  
Rajesh V. Nair ◽  
Léon A. Woldering ◽  
Merel D. Leistikow ◽  
Allard P. Mosk ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Three Dimensional ◽  
Photonic Band

Spontaneous emission in three-dimensional photonic crystals with an incomplete band gap

2003 ◽  
Vol 62 (2) ◽  
pp. 210-216 ◽  
Author(s):  
S. Y Zhu ◽  
G. X Li ◽  
Y. P Yang ◽  
F. L Li
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Spontaneous Emission ◽  
Three Dimensional

Silica photonic crystals with quasi-full band gap in the visible region prepared in ethanol *

2003 ◽  
Vol 13 (9) ◽  
pp. 717-720 ◽  
Author(s):  
Hui Zhang ◽  
Xidong Wang ◽  
Xiaofeng Zhao ◽  
Wenchao Li ◽  
Qing Tang
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Visible Region ◽  
Full Band

Characteristic band gap structures of high dielectric contrast photonic crystals

2011 ◽  
Vol 1343 ◽  
Author(s):  
Sheng D. Chao ◽  
Hsin Y. Peng
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Hexagonal Lattice ◽  
Dispersion Curves ◽  
Band Gaps ◽  
Circular Cylinders ◽  
Change Characteristics ◽  
Dielectric Contrast ◽  
Full Band ◽  
High Dielectric

ABSTRACTConventional photonic crystals exhibit low-lying full band gaps for the dielectric contrast smaller than 15. As the dielectric contrast increases, the band gap patterns change characteristics and exhibit interesting properties. In particular, the dispersion curves near the band gap region become concentrated to the middle band frequencies and exhibit an overall red shift in frequency. For a dielectric column photonic crystal made of a hexagonal lattice of circular cylinders, the maximum full band gap was found at the dielectric contrast as high as 27.5, which is attainable by using ceramics materials. The gap opens at high-lying bands, has simultaneous TM and TE band edges, and exhibit flattened dispersion curves near the band edges.

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