Compact triplexer in two-dimensional hexagonal lattice photonic crystals

2011 ◽  
Vol 9 (4) ◽  
pp. 042501-42504
Author(s):  
任宏亮 Hongliang Ren ◽  
马建平 Jianping Ma ◽  
温浩 Hao Wen ◽  
覃亚丽 Yali Qin ◽  
吴哲夫 Zhefu Wu ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Hexagonal Lattice ◽  
Two Dimensional

scholarly journals Negative Propagation Effects in Two-Dimensional Silicon Photonic Crystals

2012 ◽  
Vol 2012 ◽  
pp. 1-7
Author(s):  
Ping Jiang ◽  
Kang Xie ◽  
Huajun Yang ◽  
Zhenhai Wu
Keyword(s):  
Photonic Crystals ◽  
Eigenvalue Problems ◽  
Negative Refraction ◽  
Hexagonal Lattice ◽  
Fdtd Method ◽  
Expansion Method ◽  
Complex Eigenvalue ◽  
Two Dimensional ◽  
Negative Index ◽  
Silicon Photonic

We demonstrated negative refraction effects of light propagating in two-dimensional square and hexagonal-lattice silicon photonic crystals (PhCs). The plane wave expansion method was used to solve the complex eigenvalue problems, as well as to find dispersion curves and equal-frequency contour (EFC). The finite-difference time-domain (FDTD) method was used to simulate and visualize electromagnetic wave propagation and scattering in the PhCs. Theoretical analyses and numerical simulations are presented. Two different kinds of negative refractions, namely, all-angle negative refraction (AANR) without a negative index and negative refraction with effective negative index, have been verified and compared.

Fabrication of Two-Dimensional Photonic Crystals on N-Type Silicon Substrate Using Holographic and Wet Etching Techniques

2007 ◽  
Author(s):  
Han Lin ◽  
Shou Liu ◽  
Xiangsu Zhang
Keyword(s):  
Porous Silicon ◽  
Photonic Crystals ◽  
Silicon Substrate ◽  
Lattice Structure ◽  
Hexagonal Lattice ◽  
Cost Effective ◽  
Wet Etching ◽  
Etching Time ◽  
Two Dimensional ◽  
Photoresist Mask

Technique of fabricating two-dimensional (2D) photonic crystals (PCs) in silicon wafers using the combination of holographic lithography and wet etching is described in the paper. The fabricated silicon material is suitable to be used as porous silicon for Ge/Si quantum dots growth or other applications. Single exposure holographic method was adopted to fabricate the photoresist mask with the pattern of 2D hexagonal lattice structure. HF:HNO3:CH3COOH = 4:4:3 solution was used to etch circular pores with bowl-shaped bottom into silicon substrate at room temperature with 30 s etching time. Periodic structure in silicon with 1 μm lattice constant and 200 nm pore depth was obtained in the experiment. The fabrication process is fast and cost-effective thus having the potential for industrial mass production of porous silicon.

Numerical Study on Two-dimensional Magnetic Photonic Crystals Made of Magnetized Ferrites

PIERS Online ◽  
2007 ◽  
Vol 3 (3) ◽  
pp. 305-307 ◽  
Author(s):  
Jie Xu ◽  
Ping Chen ◽  
Yue Shi ◽  
Xin-Yi Ji ◽  
Ai-Min Jiang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Numerical Study ◽  
Two Dimensional ◽  
Magnetic Photonic Crystals

DESIGN OF Y SHAPED 2x1 ENCODER USING TWO DIMENSIONAL PHOTONIC CRYSTALS

2019 ◽  
Vol 7 (1) ◽  
pp. 12
Author(s):  
K. LATHA ◽  
R. ARUNKUMAR ◽  
S. ROBINSON ◽  
◽  
◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Two Dimensional

scholarly journals Two-dimensional iodine-monofluoride epitaxy on WSe2

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Yung-Chang Lin ◽  
Sungwoo Lee ◽  
Yueh-Chiang Yang ◽  
Po-Wen Chiu ◽  
Gun-Do Lee ◽  
...  
Keyword(s):  
Density Functional ◽  
Surface Passivation ◽  
Hexagonal Lattice ◽  
Chemical Vapor ◽  
Growth Promoter ◽  
Two Dimensional ◽  
Epitaxial Relationship ◽  
Chemical Vapor Deposition Growth ◽  
Scanning Transmission ◽  
Great Possibility

AbstractInterhalogen compounds (IHCs) are extremely reactive molecules used for halogenation, catalyst, selective etchant, and surface modification. Most of the IHCs are unstable at room temperature especially for the iodine-monofluoride (IF) whose structure is still unknown. Here we demonstrate an unambiguous observation of two-dimensional (2D) IF bilayer grown on the surface of WSe2 by using scanning transmission electron microscopy and electron energy loss spectroscopy. The bilayer IF shows a clear hexagonal lattice and robust epitaxial relationship with the WSe2 substrate. Despite the IF is known to sublimate at −14 °C and has never found as a solid form in the ambient condition, but surprisingly it is found stabilized on a suitable substrate and the stabilized structure is supported by a density functional theory. This 2D form of IHC is actually a byproduct during a chemical vapor deposition growth of WSe2 in the presence of alkali metal halides as a growth promoter and requires immediate surface passivation to sustain. This work points out a great possibility to produce 2D structures that are unexpected to be crystallized or cannot be obtained by a simple exfoliation but can be grown only on a certain substrate.

Effects of geometric and refractive index disorder on wave propagation in two-dimensional photonic crystals

2000 ◽  
Vol 62 (4) ◽  
pp. 5711-5720 ◽  
Author(s):  
A. A. Asatryan ◽  
P. A. Robinson ◽  
L. C. Botten ◽  
R. C. McPhedran ◽  
N. A. Nicorovici ◽  
...  
Keyword(s):  
Refractive Index ◽  
Wave Propagation ◽  
Photonic Crystals ◽  
Two Dimensional
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