Graphene based photonic crystals including anisotropic defect layers with highly tunable optical responses in infrared frequency range

2020 ◽  
Vol 597 ◽  
pp. 412380
Author(s):  
Sepehr Razi ◽  
Fatemeh Sepahi ◽  
Akbar Abdi Saray
Keyword(s):  
Photonic Crystals ◽  
Frequency Range ◽  
Optical Responses ◽  
Infrared Frequency Range

Effect of Double Defects on Transmission Spectra of One-Dimensional Photonic Crystals

2010 ◽  
Vol 663-665 ◽  
pp. 725-728 ◽  
Author(s):  
Yuan Ming Huang ◽  
Qing Lan Ma ◽  
Bao Gai Zhai ◽  
Yun Gao Cai
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Theoretical Calculations ◽  
Stop Band ◽  
Band Gaps ◽  
Characteristic Matrix ◽  
Frequency Range ◽  
Defect Band ◽  
One Dimensional ◽  
The One

Considered the model of the one-dimensional photonic crystals (1-D PCs) with double defects, the refractive indexes (n2’, n3’ and n2’’, n3’’) of the double defects were 2.0, 4.0 and 4.0, 2.0 respectively. With parameter n2=1.5, n3=2.5, by theoretical calculations with characteristic matrix method, the results shown that for a certain number (14 was taken) of layers of the 1-D PCs, when the double defects abutted, there was a defect band gap in the stop band gap, while when the double defects separated, there occurred two defect band gaps in the stop band gap; besides, with the separation of the two defects, the transmittance of the double defect band gaps decreased gradually. In addition, in this progress, the frequency range of the stop band gap has a little increase from 0.092 to 0.095.

Nonlinear optical responses in two-dimensional photonic crystals

2009 ◽  
Vol 518 (2) ◽  
pp. 470-472 ◽  
Author(s):  
Shin-ichiro Inoue ◽  
Shiyoshi Yokoyama
Keyword(s):  
Photonic Crystals ◽  
Nonlinear Optical ◽  
Two Dimensional ◽  
Optical Responses

scholarly journals METAMATERIAL-BASED SENSOR DESIGN WORKING IN INFRARED FREQUENCY RANGE

2011 ◽  
Vol 34 ◽  
pp. 205-223 ◽  
Author(s):  
Luigi La Spada ◽  
Filiberto Bilotti ◽  
Lucio Vegni
Keyword(s):  
Sensor Design ◽  
Frequency Range ◽  
Infrared Frequency Range

scholarly journals Flat lensing in the visible frequency range by woodpile photonic crystals

2013 ◽  
Vol 38 (14) ◽  
pp. 2376 ◽  
Author(s):  
L. Maigyte ◽  
V. Purlys ◽  
J. Trull ◽  
M. Peckus ◽  
C. Cojocaru ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Frequency Range ◽  
Visible Frequency

Interesting Band Properties of One-Dimensional Photonic Crystals Containing Epsilon-Negative Layers

2010 ◽  
Vol 65 (4) ◽  
pp. 329-334 ◽  
Author(s):  
Fei Xu ◽  
Yulin Chen
Keyword(s):  
Photonic Crystals ◽  
Low Frequency ◽  
Transmission Band ◽  
Frequency Range ◽  
One Dimensional ◽  
Transmission Properties ◽  
Periodic Repetition ◽  
Positive Index ◽  
Small Period ◽  
General Method

The transmission properties of one-dimensional photonic crystals constituted by a periodic repetition of positive-index layers and epsilon-negative layers are studied theoretically. This structure shows some interesting properties including a wide gap in the low frequency range for small period number and a comb-like transmission band in the gap. The properties of the comb-like transmission band are sensitive to the period number of the structure. In contrast to the zero-ngap and the zero- φeff gap, the transmission properties are dependent on the structure parameters. A general method to decide the position of gap and transmission band in this kind of structure is also presented.

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