Saba Asghari; Jamal Barvestani
Volume 1, Issue 4 , June 2017, Pages 9-14
Abstract
In this paper slow light properties in a photonic crystal waveguide were investigated and changing the radius of the adjacent rings of the slot were used for improving slow light properties. We have studied the characteristic of slotted photonic crystal waveguides slotted, then, by using the super cell ...
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In this paper slow light properties in a photonic crystal waveguide were investigated and changing the radius of the adjacent rings of the slot were used for improving slow light properties. We have studied the characteristic of slotted photonic crystal waveguides slotted, then, by using the super cell method based on plane wave expansion method. For TE mode in a two-dimensional slotted photonic crystal with the symmetry of triangular lattice that has been formed of air rings in silicon background, by changing the radius of the first adjacent rings of the slot, we have achieved the group velocity of and in the bandwidth of nm and 11.2nm were achieved.
Farshid Jahanbakhsh; Gholamreza Honarasa; Alireza Keshavarz
Volume 1, Issue 4 , June 2017, Pages 15-24
Abstract
In this paper, the photon subtracted generalized coherent states for nonharmonic oscillators in a nonlinear Kerr medium have been introduced. Then, the number- phase Winger function of the introduced states was investigated. The Wigner function was negative in some regions which showed the nonclassical ...
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In this paper, the photon subtracted generalized coherent states for nonharmonic oscillators in a nonlinear Kerr medium have been introduced. Then, the number- phase Winger function of the introduced states was investigated. The Wigner function was negative in some regions which showed the nonclassical signature of these states. Finally, the phase properties of these states were discussed by using Pegg-Barnett phase distribution function formalism which showed that this distribution function has higher and sharper peaks for smaller and thus, it was more localized with respect to . Finally, number- phase squeezing and number- phase entropy uncertainty relation for these states were investigated. By studing the number- phase squeezing can be concluded that these states are nonclassical signature.
Mohammad Mohammadi; Mohammad Ghanaatian; Farideh Sohooli
Volume 1, Issue 4 , June 2017, Pages 25-36
Abstract
In this paper, we first described briefly the non-linear system and its solitray kink and anti-kink solutions in a dimensional space-time. We showed that there will be an internal channel for the low amplitude oscillations for the kink (anti-kink) solutions. For such oscillations with specific ...
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In this paper, we first described briefly the non-linear system and its solitray kink and anti-kink solutions in a dimensional space-time. We showed that there will be an internal channel for the low amplitude oscillations for the kink (anti-kink) solutions. For such oscillations with specific velocity dependent frequencies and wavelengths, there are the similar wave-particle relations to the standard quantum mechanical ones. Finally, we showed numerically that in the collisions between kink-ant kink pairs, the output results are completely dependent on the initial phases of the oscillations which are imposed on the kink-ant kink pairs. In other words, the uncertainty created in the output of the same collisions is due to a quantity that does not in any way play a role in the particle properties, which can be called a hidden variable.
Mehdi مهدی سودمند1; Leila Akbarzadeh gholi dizaji; morad Ebrahimkhas
Volume 1, Issue 4 , June 2017, Pages 37-46
Abstract
In this paper, properties of optical soliton and their propagation on the basis of Generalized Nonlinear Schrödinger Equation in optical fiber is investigated. Analytical and numerical methods is used for solution of partial differential equations and Fourier transform based on time frequency to ...
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In this paper, properties of optical soliton and their propagation on the basis of Generalized Nonlinear Schrödinger Equation in optical fiber is investigated. Analytical and numerical methods is used for solution of partial differential equations and Fourier transform based on time frequency to show solitons in the area of nonlinear scattering. We analyzed the behavior of solitons with solution of nonlinear Schrödinger equation and by using SSFM that is a very efficient way and it is possible to study the composition of the solitons and behavior of high order solitons.
Zohreh Dorrani
Volume 1, Issue 4 , June 2017, Pages 47-52
Abstract
In this paper, surface Plasmon sensor was designed by using structures of two-dimensional photonic crystal. This structure is a hexagonal arrange that on each side located 7 circular holes. The circular holes made of air that have been arranged in silicon background and the holes have been arranged ...
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In this paper, surface Plasmon sensor was designed by using structures of two-dimensional photonic crystal. This structure is a hexagonal arrange that on each side located 7 circular holes. The circular holes made of air that have been arranged in silicon background and the holes have been arranged a triangular arrangement. The new arrangement makes with defects in the structure center and added new silver bar. Using of the finite difference time domain (FDTD) simulation method on this structure were calculated the propagation loss per wavelength. By changing the refractive index in sensitive area, resonance will happen in the wavelength. By changing the refractive index in sensitive are, the wavelength that resonance happens in it, will change and shift. This feature makes the structure ready to use by sensor. This sensor, depending on the type of sensitive material can be used in different systems and wide range. For examples: environment monitoring, liquid and gas detection and also medical diagnostics.
Elaheh Namvari; saeid Shojaei; Asghar Asgari
Volume 1, Issue 4 , June 2017, Pages 53-58
Abstract
In this article luminescence emission of Non-polar Core-Multi Shell Semiconductor Nano Wire with radial symmetric has been investigated. The self-consistent approach is used to solve the system of Schrodinger-Poisson equations to obtain wave functions, energy levels and band tilting that have the ...
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In this article luminescence emission of Non-polar Core-Multi Shell Semiconductor Nano Wire with radial symmetric has been investigated. The self-consistent approach is used to solve the system of Schrodinger-Poisson equations to obtain wave functions, energy levels and band tilting that have the key roles in luminescence emission. Our results have have many implications in experiment.
Yasaman Abed; fatemeh Mostaghni
Volume 1, Issue 4 , June 2017, Pages 59-67
Abstract
This paper is focused essentially on the synthesis and morphological investigation of CoFe2O4 nanoparticles in the field of medicine and targeted drug delivery. Therefore, the magnetic nanoparticles for this field require not only optimistic magnetic properties and narrow size distribution but also to ...
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This paper is focused essentially on the synthesis and morphological investigation of CoFe2O4 nanoparticles in the field of medicine and targeted drug delivery. Therefore, the magnetic nanoparticles for this field require not only optimistic magnetic properties and narrow size distribution but also to be non-toxic and biocompability. Biological synthesis method is suitable for this purpose. The magnetite nanoparticles CoFe2O4 is synthesized using co precipitation method from metal salts and pistachio leaf extract at low temperature and ambient pressure. The synthesized magnetite nanoparticles were characterized by X-ray diffraction and Rietveld analysis. XRD pattern, confirmed the single phase formation of pure CoFe2O4 and without any impurity phase with 14 nm of average diameter. Rietveld analysis, confirmed the expected cubic inverse spinel structure with Fd3m space group and good properties. The method in the present study offers several important advantageous features. First, the synthesis method is economical and environmentally friendly, because it involves inexpensive and non-toxic materials. Second, size-controlled CoFe2O4 nanoparticles are produced easily in one pot rate. In addition, carboxylate ions in leaf extract act as shielding agent which induce the stability of the biologically synthesized nanoparticles.