Coupling of the TE and TM modes of electromagnetic waves in two-dimensional photonic crystals with surface defects of liquid crystals

2003 ◽  
Vol 68 (4) ◽  
Author(s):  
Hiroyuki Takeda ◽  
Katsumi Yoshino
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystals ◽  
Electromagnetic Waves ◽  
Surface Defects ◽  
Two Dimensional ◽  
Te And Tm Modes

Active Photonic Crystals Based multiplexer

2006 ◽  
Vol 934 ◽  
Author(s):  
Principia Dardano ◽  
Vito Mocella ◽  
Luigi Sirleto ◽  
Luigi Moretti ◽  
Ivo Rendina
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Square Lattice ◽  
Two Dimensional ◽  
Optical Effect ◽  
Electro Optical Effect ◽  
Silicon Rods

ABSTRACTIn the last years, in order to achieve active tuning of photonic crystals devices, the possibility to use liquid crystal inside photonic crystals has been explored.On this line of argument, in this paper, we numerically investigate a tunable T-shaped waveguide diplexer, based on a two-dimensional square lattice photonic crystal composed of silicon rods in a liquid crystals. We prove that complete splitting of the entire input wavelengths range in two sub-ranges symmetrical with respect to the middle (switching) wavelength, and propagating in right and left arms respectively, can be achieved. Moreover, changing the refractive index of liquid crystals by electro-optical effect, a tuning of switching wavelength of about 60 nm can be obtained.

Two-dimensional vectorial photonic crystals formed in azo-dye-doped liquid crystals

2006 ◽  
Vol 31 (22) ◽  
pp. 3336 ◽  
Author(s):  
Suraj P. Gorkhali ◽  
Sylvain G. Cloutier ◽  
Gregory P. Crawford
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystals ◽  
Azo Dye ◽  
Two Dimensional

Tunable T-Shaped Waveguide in Two Dimensional Photonic Crystals Based on Liquid Crystals

2006 ◽  
Vol 453 (1) ◽  
pp. 165-175
Author(s):  
Principia Dardano ◽  
Luigi Sirleto ◽  
Vito Mocella ◽  
Ivo Rendina ◽  
Luigi Moretti
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystals ◽  
Two Dimensional

Focusing systems based on two-dimensional photonic crystals

2021 ◽  
pp. 49-54
Author(s):  
A.Yu. Vetluzhsky ◽  
Keyword(s):  
Photonic Crystals ◽  
Electromagnetic Waves ◽  
Homogeneous Medium ◽  
Two Dimensional ◽  
Edge Waves ◽  
Constructive Interference ◽  
Radiation Focusing ◽  
First Case ◽  
Dielectric Structures ◽  
Low Refractive Index

Methods of focusing electromagnetic waves based on the use of two-dimensional photonic crystals formed by metal and dielectric elements are considered. In the first case the physical basis for the creation of radiation focusing systems consists in the manifestation of the properties of a homogeneous medium with ultra-low refractive index by metal photonic crystals at the frequencies of the first allowed zone. In the second case the possibility of constructive interference of direct transmission waves and edge waves diffracting at the edges of spatially bounded dielectric structures is used for focusing.

In- and out-of-plane propagation of electromagnetic waves in low index contrast two dimensional photonic crystals

2001 ◽  
Vol 89 (2) ◽  
pp. 824-830 ◽  
Author(s):  
S. Foteinopoulou ◽  
A. Rosenberg ◽  
M. M. Sigalas ◽  
C. M. Soukoulis
Keyword(s):  
Photonic Crystals ◽  
Electromagnetic Waves ◽  
Two Dimensional ◽  
Out Of Plane ◽  
Index Contrast
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