scholarly journals Tailoring Optical Bistability In Nonlinear Photonic Crystals Based on Metallic Nanoparticles And Graphene

2021 ◽  
Author(s):  
Tayebeh Naseri ◽  
Hamid Pashaei Adl
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Field Distribution ◽  
Metallic Nanoparticles ◽  
Optical Bistability ◽  
Light Transmission ◽  
Defect Layer ◽  
Bistable Switch ◽  
Graphene Layers ◽  
Nonlinear Photonic Crystals

Abstract In this work, we revisit the optical response of a one-dimensional photonic crystal consisting of graphene monolayers and a plasmonic nanocomposite as a defect layer in the structure. By taking advantage of the modified transfer matrix approach, the analytical solution of the light transmission and field distribution of the photonic crystal are evaluated. Besides, by considering one of the layers as a Kerr-nonlinear medium, we delve into optical bistability phenomenon in the model for two different cases. Our numerical results reveal that the proposed photonic crystal can enhance the field distribution and reduce the optical bistability’s threshold in comparison to the conventional photonic crystals. Furthermore, the optical bistable switch-up and switch-down thresholds of the proposed resonator can be tailored flexibly by plasmon-plasmon interactions in the defect layer. Finally, the electric field distribution amelioration and optical bistability by means of graphene layers in the structure are attainable. The influences of the parameters such as the graphene and the nanocomposite on the performance of OB are analyzed and compared in the two different cases. Therefore, present approach can lay the groundwork for designing highly sensitive surface plasmon resonance biosensors and switches where the proposed technique may find unprecedented capabilities.

scholarly journals Electric field induced structural colour tuning of a silver/titanium dioxide nanoparticle one-dimensional photonic crystal

2016 ◽  
Vol 7 ◽  
pp. 1404-1410 ◽  
Author(s):  
Eduardo Aluicio-Sarduy ◽  
Simone Callegari ◽  
Diana Gisell Figueroa del Valle ◽  
Andrea Desii ◽  
Ilka Kriegel ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Electric Field ◽  
Light Transmission ◽  
Titanium Dioxide Nanoparticles ◽  
Blue Shift ◽  
Titanium Dioxide Nanoparticle ◽  
Structural Colour ◽  
Colour Tuning

An electric field is employed for the active tuning of the structural colour in photonic crystals, which acts as an effective external stimulus with an impact on light transmission manipulation. In this work, we demonstrate structural colour in a photonic crystal device comprised of alternating layers of silver nanoparticles and titanium dioxide nanoparticles, exhibiting spectral shifts of around 10 nm for an applied voltage of only 10 V. The accumulation of charge at the metal/dielectric interface with an applied electric field leads to an effective increase of the charges contributing to the plasma frequency in silver. This initiates a blue shift of the silver plasmon band with a simultaneous blue shift of the photonic band gap as a result of the change in the silver dielectric function (i.e. decrease of the effective refractive index). These results are the first demonstration of active colour tuning in silver/titanium dioxide nanoparticle-based photonic crystals and open the route to metal/dielectric-based photonic crystals as electro-optic switches.

Optical properties of one-dimensional defective photonic crystal containing nanocomposite material

2017 ◽  
Vol 26 (01) ◽  
pp. 1750007 ◽  
Author(s):  
Arafa H. Aly ◽  
Hussein A. Elsayed ◽  
Christina Malek
Keyword(s):  
Optical Properties ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Volume Fraction ◽  
Dielectric Materials ◽  
Defect Layer ◽  
Nanocomposite Materials ◽  
One Dimensional ◽  
Plasmon Frequency ◽  
Metal Thickness

We have obtained the optical properties of one-dimensional defective photonic crystals containing nanocomposite materials of Ag as a defect layer in UV region; the permittivity of nanocomposite materials depends on plasmon frequency of metal nanoparticles. Our analysis is based on the fundamentals of the transfer matrix method. We have investigated the effect of many parameters such as metal thickness, volume fraction, and defected dielectric materials on the intensity of a defect layer.

scholarly journals Tunable Optical Bistability in One-Dimensional Photonic Crystal with a Nonlinear Defect Coupled by Graphene Sheets

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Zhiwei Zheng ◽  
Leyong Jiang ◽  
Jun Guo ◽  
Xiaoyu Dai ◽  
Yuanjiang Xiang
Keyword(s):  
Photonic Crystal ◽  
Fermi Energy ◽  
Optical Bistability ◽  
Lateral Shift ◽  
The Other ◽  
Graphene Sheets ◽  
Hysteresis Width ◽  
One Dimensional ◽  
Graphene Layers ◽  
Dimensional Photonic Crystal

The optical bistability in one-dimensional photonic crystal (1DPC) with a nonlinear defect is investigated. It is demonstrated that, by introducing graphene layers into the nonlinear defect, the optical bistability in 1DPC can be changed significantly. The hysteresis threshold increases with the number of graphene monolayers and can be lowered or enhanced by tuning the Fermi energy of graphene. On the other hand, the hysteresis width and the nonlinear lateral shift can also be controlled by varying the Femi energy and the number of graphene monolayers. These results may be useful for controlling the optical bistability and nonlinear lateral shift in 1DPCs.

Temperature dependent transmission and optical bistability in a 1D photonic crystal with a liquid crystal defect layer

2013 ◽  
Vol 60 (21) ◽  
pp. 1883-1891 ◽  
Author(s):  
Samad Roshan Entezar ◽  
Amir Madani ◽  
Mojtaba Karimi Habil ◽  
Abdolrahman Namdar ◽  
Habib Tajalli
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Optical Bistability ◽  
Defect Layer ◽  
Crystal Defect ◽  
Temperature Dependent ◽  
1D Photonic Crystal

scholarly journals The effect of defect layer on transmissivity and light field distribution in general function photonic crystals

2013 ◽  
Vol 53 ◽  
pp. 1-6 ◽  
Author(s):  
Xiang-Yao Wu ◽  
Si-Qi Zhang ◽  
Bo-Jun Zhang ◽  
Xiao-Jing Liu ◽  
Jing Wang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Field Distribution ◽  
Light Field ◽  
Defect Layer ◽  
General Function

All-optical switching using optical bistability in nonlinear photonic crystals

2003 ◽  
Author(s):  
Marin Soljacic ◽  
Mihai Ibanescu ◽  
Chiyan Luo ◽  
Steven G. Johnson ◽  
Shanhui Fan ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Optical Switching ◽  
Optical Bistability ◽  
Nonlinear Photonic Crystals ◽  
All Optical ◽  
All Optical Switching

scholarly journals OPTICAL SOLITONS IN A TRINAL-CHANNEL INVERTED NONLINEAR PHOTONIC CRYSTAL

2013 ◽  
Vol 22 (01) ◽  
pp. 1350012 ◽  
Author(s):  
GUIHUA CHEN ◽  
SHAOQIANG ZHANG ◽  
MUYING WU
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Nonlinear Propagation ◽  
Saturable Absorption ◽  
Linear Potential ◽  
Nonlinear Photonic Crystal ◽  
Self Focusing ◽  
Nonlinear Lattices ◽  
Nonlinear Photonic Crystals ◽  
New Type

Inverted nonlinear photonic crystals are the crystals featuring competition between linear and nonlinear lattices, with minima of the linear potential coinciding with maxima of the nonlinear pseudopotential, and vice versa. Traditional inverted nonlinear photonic crystals only have two channels, and can be attained experimentally by means of Rhodamine B (RhB, a dye featuring saturable absorption) doped into the SU-8 polymer. In this paper, a new type of inverted nonlinear photonic crystal is constructed by juxtaposing three kinds of channels into a period. These three channels are a purely linear channel, a saturable self-focusing nonlinear channel, and a saturable self-defocusing nonlinear channel. This optical device is assumed to be fabricated by means of SU-8 polymer material periodically doped with two types of active dyes. The nonlinear propagation of a light field inside this device (passing along the channel) can be described by a nonlinear Schrödinger equation. Stable multi-peak fundamental and dipole solitons are found in the first gap of the system. These solitons sufficiently exhibit some interesting digital properties, which may have potential in optical communications.

Constructing a light-field distribution for the laser guiding of atoms in photonic crystals

2000 ◽  
Vol 184 (5-6) ◽  
pp. 391-396 ◽  
Author(s):  
A.V. Tarasishin ◽  
S.A. Magnitskii ◽  
V.A. Shuvaev ◽  
A.M. Zheltikov
Keyword(s):  
Photonic Crystals ◽  
Field Distribution ◽  
Light Field ◽  
Laser Guiding
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