Ring resonator of surface modes based on photonic crystals

2011 ◽  
Vol 284 (16-17) ◽  
pp. 4073-4077 ◽  
Author(s):  
Hongliang Ren ◽  
Jinghong Zhang ◽  
Yali Qin ◽  
Kai Liu ◽  
Zhefu Wu ◽  
...  
2015 ◽  
Vol 22 (2) ◽  
pp. 022122 ◽  
Author(s):  
S. Shukla ◽  
S. Prasad ◽  
V. Singh

2021 ◽  
Vol 45 (4) ◽  
pp. 335-339
Author(s):  
Mehdi Ghoumazi ◽  
Messaoud Hameurlain

A new study was presented on a new sensor based on two-dimensional photonic crystals (Phc's) to detect the following three organic materials: iodobenzene (C6H5I), fluorobenzene (C6H5F), chlorobenzene (C6H5Cl). These materials have dielectric constants (εr) equal to 2.623; 2.140; 2.318, respectively. The proposed sensor is a structure made of silicon rods submerged in air plus a ring resonator. The ring resonator is stuck between two horizontal waveguides. At the end of the ends of the structure there are four ports where port 1 and 2 belong to the top guide and port (3) and (4) the bottom one. In order to analyze the behavior of the sensor, a plane wave expansion approach (PWE) and the finite element method (FEM) are applied. Thanks to the MATLAB and COMSOL simulation software, we were able to obtain the following numerical results: the norm of the electric field, the total energy density and this last magnitude according to the refractive indices of the different organic materials used. We could observe variations in energy density for each material. So, this change is due to their refractive index which varies from one material to another. In this study, we have fixed the other parameters like the constant of the lattice "a" and the radius "r" and we are interested in the dielectric constants (εr) or more precisely the refractive index (n), the latter proves that it is one of the important parameters for detection.


2011 ◽  
Vol 110-116 ◽  
pp. 1024-1029
Author(s):  
Quan Xu ◽  
Kang Xie ◽  
Hua Jun Yang

We demonstrate self-collimation phenomena based on a new type of photonic crystals made of square lattice with ring shaped holes. The plane wave expansion (PWE) method is used to get the three dimensional band diagram and equi-frequency of the second band which displays the self-collimation phenomena for the structure we proposed in this paper. The collimation angle is mainly depending on the maximum flatness half width (MFHW) of the equi-frequency. The FDTD method is employed to demonstrate the electric field amplitude distributions for the collimation phenomena. Partly, in order to achieve high efficient coupling of the input and output port, we modify both surface structures to modulate the wave-front to obtain desired effect. The parameter of the input surface is modified which will prevent the production of surface modes which takes away the EM power and enhance the transmittance. For a square lattice with the modified parameters at each side of the input surface, the surface modes are suppressed to couple with the continuum of the dielectric waveguide modes. More importantly, they might have potential application in integrated optical circuits.


2007 ◽  
Vol 21 (4) ◽  
pp. 485-499 ◽  
Author(s):  
F. Villa-Villa ◽  
J. A. Gaspar-Armenta ◽  
A. Mendoza-Suárez

2009 ◽  
Vol 26 (8) ◽  
pp. 1635 ◽  
Author(s):  
Tong-Biao Wang ◽  
Cheng-Ping Yin ◽  
Wen-Yao Liang ◽  
Jian-Wen Dong ◽  
He-Zhou Wang

2016 ◽  
Vol 5 (11) ◽  
pp. e16168-e16168 ◽  
Author(s):  
Valery N Konopsky ◽  
Elena V Alieva ◽  
Sergey Yu Alyatkin ◽  
Alexey A Melnikov ◽  
Sergey V Chekalin ◽  
...  

2007 ◽  
Vol 31 ◽  
pp. 7-10
Author(s):  
A. Soltani Vala ◽  
J. Barvestani ◽  
M. Kalafi

An analytical direct matching procedure within the Kronig-Penney model applied to analyze the dispersion behavior of the localized surface states supported in the surface of a semiinfinite one-dimensional photonic crystals truncated with air. The photonic crystal containing alternating layers of positive and negative media. In the case of the conventional indices, as the incident light changes from normal to oblique incidence, the surface modes shifts into higher frequencies. For this reason, the phenomenon of photonic band gap has been used only under a narrow range of frequencies of light incident at a particular angle or in a particular angular range. We have showed that by choosing some proper value for the PC parameters, zero and negative dispersion of surface modes emerge in a large range of k|| , and, due to the different nature of the band structure the surface modes are more localized compared to those appeared in the conventional PC.


1994 ◽  
Author(s):  
William M. Robertson ◽  
Gnanalingam Arjavalingam ◽  
Shawn-Yu Lin

2019 ◽  
Vol 19 (14) ◽  
pp. 5566-5571 ◽  
Author(s):  
Nur Erim ◽  
Muhammed Necip Erim ◽  
Hamza Kurt

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