Sözüer, Hüseyin Sami
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Name Variants
Sözuër, H. S.
Sami SÖzÜer, H.
Sozuer, H. S.
Sozuer, HS
Sözüer, H. S.
Sözüer, HS
Sozuer, H. Sami
Sözuër, H. Sami
Sözüer, H. Sami
Sozuer, Huseyin Sami
Sami SÖzÜer, H.
Sozuer, H. S.
Sozuer, HS
Sözüer, H. S.
Sözüer, HS
Sozuer, H. Sami
Sözuër, H. Sami
Sözüer, H. Sami
Sozuer, Huseyin Sami
Job Title
Email Address
samisozuer@iyte.edu.tr
Main Affiliation
04.05. Department of Pyhsics
Status
Former Staff
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Scopus Author ID
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WoS Researcher ID
Sustainable Development Goals
1NO POVERTY
0
Research Products
2ZERO HUNGER
0
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3GOOD HEALTH AND WELL-BEING
0
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4QUALITY EDUCATION
0
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5GENDER EQUALITY
0
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6CLEAN WATER AND SANITATION
0
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7AFFORDABLE AND CLEAN ENERGY
1
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8DECENT WORK AND ECONOMIC GROWTH
0
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
2
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10REDUCED INEQUALITIES
0
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11SUSTAINABLE CITIES AND COMMUNITIES
0
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12RESPONSIBLE CONSUMPTION AND PRODUCTION
0
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13CLIMATE ACTION
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14LIFE BELOW WATER
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15LIFE ON LAND
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16PEACE, JUSTICE AND STRONG INSTITUTIONS
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17PARTNERSHIPS FOR THE GOALS
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Documents
6
Citations
377
h-index
4
Documents
8
Citations
805
Scholarly Output
14
Articles
7
Views / Downloads
9321/5148
Supervised MSc Theses
5
Supervised PhD Theses
2
WoS Citation Count
34
Scopus Citation Count
39
Patents
0
Projects
4
WoS Citations per Publication
2.43
Scopus Citations per Publication
2.79
Open Access Source
11
Supervised Theses
7
| Journal | Count |
|---|---|
| International Journal of Modern Physics B | 2 |
| Journal of Applied Physics | 2 |
| Journal of Modern Optics | 1 |
| Optics Express | 1 |
| Physical Review B - Condensed Matter and Materials Physics | 1 |
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Scopus Quartile Distribution
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14 results
Scholarly Output Search Results
Now showing 1 - 10 of 14
Article Citation - WoS: 14Citation - Scopus: 18Robustness of One-Dimensional Photonic Band Gaps Under Random Variations of Geometrical Parameters(American Physical Society, 2005) Sözüer, Hüseyin Sami; Sevim, KorayThe supercell method is used to study the variation of the photonic bandgaps in one-dimensional photonic crystals under random perturbations to thicknesses of the layers. The results of both plane wave and analytical band structure and density of states calculations are presented along with the transmission coefficient as the level of randomness and the supercell size is increased. It is found that with the supercell size fixed at 1024 unit cells, higher bandgaps disappear first as the randomness is gradually increased. The lowest bandgap is found to persist up to a randomness level of 55%. However, as the supercell size is increased all bandgaps are observed to approach pseudogaps but with very low density of states. It is shown that harmonics of a relatively small cluster of closely spaced defects largely account for the bulk of the modes that populate the photonic bandgaps.Master Thesis Frequency Splitting With Two Dimensional Triangular Photonic Crystal(Izmir Institute of Technology, 2009) Erol, Adem Enes; Sözüer, Hüseyin SamiPhotonic crystals are periodically arranged dielectric materials. If the periodicity is broken along a line, i.e. a line defect is formed, then the line defect can behave like a waveguide. In this thesis, a frequency splitting device for electromagnetic waves is designed and tested theoretically using line defect waveguides. The theoretical design of the waveguides is accomplished using the plane wave expansion and the supercell method. The testing is done by the finite difference time domain method. Frequency mixing and splitting, or multiplexers and demultiplexers as they are known in industry, for electromagnetic waves are important since they lead to a multiplication in capacity for optical communications. Multiplexers and demultiplexers have been in use for a long time. However, designing photonic crystal multiplexers has a history of about ten years. In this thesis, a new photonic crystal demultiplexer design is suggested using photonic crystal line defect waveguides.Master Thesis Improving Coupling Efficiency by Using Adiabtic Transition in Photonic Crystal Waveguides(Izmir Institute of Technology, 2012) Çetin, Zebih; Sözüer, Hüseyin SamiPhotonic crystal waveguides (PhCWGs), designed by removing one or more slabs from a perfectly periodic structures, are possibly future optoelectronic circuit elements that promising a good ability to confine light in a direction and allowing it to propagate in other direction. One of the problem in their application is the coupling from a PhCWG to a completely different structure. This difficulty arrives from sudden change in structure's geometry. In this thesis, to over come this difficulty we used a transition region between two photonic crystal structures that have completely different geometrical parameters. According to our simulation results we find that by using transition region, coupling can be achieved almost without any loss.Article Citation - WoS: 1Citation - Scopus: 1Fully Three-Dimensional Analysis of a Photonic Crystal Assisted Silicon on Insulator Waveguide Bend(World Scientific Publishing, 2018) Eti, Neslihan; Çetin, Zebih; Sözüer, Hüseyin SamiA detailed numerical study of low-loss silicon on insulator (SOI) waveguide bend is presented using the fully three-dimensional (3D) finite-difference time-domain (FDTD) method. The geometrical parameters are optimized to minimize the bending loss over a range of frequencies. Transmission results for the conventional single bend and photonic crystal assisted SOI waveguide bend are compared. Calculations are performed for the transmission values of TE-like modes where the electric field is strongly transverse to the direction of propagation. The best obtained transmission is over 95% for TE-like modes.Doctoral Thesis Photonic Crystal Textiles(Izmir Institute of Technology, 2022) Çetin, Zebih; Sözüer, Hüseyin SamiPhotonic crystals are man-made structures that can be used to manipulate the flow of light. They are classified as one-, two- and three-dimensional photonic crystals according to the periodic variation of the dielectric profile in space. Apart from artificial photonic crystals there are numerous examples of naturally occurring photonic crystals which have evolved mostly for structural coloration, such as wings of butterflies, natural opal gem stone, peacock feathers to name a few. Using photonic crystal structures the propagation of electromagnetic waves can entirely be prohibited by means of photonic band gap. Considering the fact that approximately two thirds of the heat loss of the human body occurs through electromagnetic radiation with a wavelength around 10 microns, it becomes important to consider photonic crystals for the purpose of reducing heat loss in textiles. We observe that the textile, by virtue of the fact that it has been produced by weaving, already has a periodic structure, and thus is a potential candidate for a photonic crystal. With the right fiber that the textile is woven and the right weave pattern, the textile itself would be a photonic crystal. The most common weave patterns used in the textile industry are plain weave, basket weave, dutch weave and twill weave. In this thesis, we used the finite-difference time-domain method to search for the optimum weave pattern to minimize heat loss by the human body.Article Citation - WoS: 12Citation - Scopus: 12High Transmission Through a 90° Bend in a Polarization-Independent Single-Mode Photonic Crystal Waveguide(The Optical Society, 2015) Erol, Adem Enes; Sözüer, Hüseyin SamiWe propose a polarization-independent single-mode waveguide, using a two-dimensional square photonic crystal with a complete band gap. The waveguide is tuned such that both TE and TM modes have the same group velocity and zero group velocity dispersion at the centergap frequency. We also present results for a 90° bend with transmission values of 98% for both modes.Master Thesis Photonic Crystal Assisted L-Shaped Waveguide Bend(Izmir Institute of Technology, 2009) Şengün, Hediye Duygu; Sözüer, Hüseyin SamiPhotonic crystals are periodic dielectric structures. This periodicity allow us to manipulate light in ways that have not been possible before. As a result, photonic crystal waveguide components play a significant role in integrated optical circuit design because waveguides allow only certain electromagnetic wave modes to propagate inside the structure. There are many corresponding applications that rely on total internal reflection. However, with total internal reflection, there is a problem in guiding light through sharp corners, large optical losses occur around tight curves with a small bending radius. A simple explanation for these losses is that the angle of the incident light too low for total internal reflection when wave turns through a sharp corner. Thus, an unacceptable fraction of the electromagnetic energy is radiated out of the waveguide. To overcome this difficulty, in this thesis, we demonstrate a novel method for guiding light through sharp corners, using a 1 photonic crystal slab waveguide for the straight sections, and assisted by 2D Line Defect Waveguide at the corners.Plane Wave Method and Supercell Method are used to Figure out parameters and obtain the guided mode for our proposed structure. Then, numerical simulations (FDTD) reveal nearly perfect transmission at certain frequency ranges. Also, in this thesis different corner elements are used to show highly efficient transmission of light through sharp corners. Thus, light can be guided through a 90. corner, almost without loss, by using different corner elements. "Crystals are like people, it is the defect in them which tend do make them interesting". Colin Humphreys.Article Citation - WoS: 4Citation - Scopus: 4Photonic Crystal Textiles for Heat Insulation(American Institute of Physics, 2023) Çetin, Zebih; Tunçtürk, Yiğit; Sözüer, Hüseyin SamiIn this work, we have studied transmission properties of a photonic crystal-like structure that can be woven into fabrics. An interesting possibility emerges when considering the potential energy savings through suppression of radiation. It is a well-established fact that every object at a finite temperature inherently emits electromagnetic waves. Within the specific context of the human body, radiation takes on a crucial role as a fundamental mechanism governing heat dissipation. Thus, exploring ways to manage or mitigate this radiation could offer innovative approaches to optimize energy consumption and enhance heat regulation. It is well known that a photonic crystal can block electromagnetic energy with a specific frequency that is falling into a photonic bandgap. By using the numerical method called a finite-difference time domain, we have shown that this property of a periodic structure can be used to make textiles to save energy that is used to heat a human body environment. Numerical calculations have shown that by using the proposed photonic crystal structure, 53 % of electromagnetic energy is reflected. Although we mainly focused on textiles, it is worth highlighting that the same fundamental principle can be extended to diverse fields; for example, this structure can be integrated with construction materials and effectively function as a radiation heat insulator. © 2023 Author(s).Article Textile With Diamond Weave for Heat Insulation(AIP Publishing, 2025) Cetin, Zebih; Sozuer, Huseyin SamiIn this work, we report the transmission properties of a woven fabric that has the symmetry of the diamond lattice. Numerical simulations we performed using the Finite Difference Time Domain method show that the transmission of infrared radiation from the human body can be reduced by as much as 50% owing to the photonic bandgap of the diamond lattice. The weaving pattern we propose is novel and can be readily implemented with the current technology. Although we consider the use of the weaving pattern for use as textiles, the same approach can be used in a variety of heat-shielding applications.Master Thesis Effect of Random Structural Variations on the Optical Properties of Honeycomb Photonic Crystals(01. Izmir Institute of Technology, 2021) Tunçtürk, Yiğit; Sözüer, Hüseyin SamiPeriodic dielectric structures called photonic crystals(PhCs) are being used in various sensors and devices. Since PhCs are designed to operate within certain frequency ranges, accuracy in structure becomes important. During the manufacturing process, random errors in geometry can be encountered. Two types of errors come to the forefront, surface roughness and positional randomness. Once the periodic structure becomes imperfect due to random errors, calculations for the desired frequency ranges must be performed using supercells. In this thesis, effect of surface roughness and positional ran- domness on photonic density of states are investigated for both TM and TE modes in two-dimensional honeycomb photonic crystals.