Modeling and Analysis of a Miniaturized Ring Modulator 
Using Silicon-Polymer-Metal Hybrid Plasmonic Phase 
Shifter. Part I: Theoretical Framework

Alhuda A. Al-mfrji; Shelan K. Tawfeeq; Raad S. Fyath

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Publication Date

Thu Jan 01 2015

Journal Name

International Journal Of Optics And Applications

Volume

5

Issue Number

4

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Modeling and Analysis of a Miniaturized Ring Modulator Using Silicon-Polymer-Metal Hybrid Plasmonic Phase Shifter. Part I: Theoretical Framework

Ring modulator

Hybrid plasmonic phase shifter

Electro-optic polymer

Alhuda A. Al-mfrji

Shelan K. Tawfeeq

Raad S. Fyath

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This paper presents comprehensive analysis and investigation for 1550nm and 1310nm ring optical modulators employing an electro-optic polymer infiltrated silicon-plasmonic hybrid phase shifter. The paper falls into two parts which introduce a theoretical modeling framework and performance assessment of these advanced modulators, respectively. In this part, analytical expressions are derived to characterize the coupling effect in the hybrid phase shifter, transmission function of the modulator, and modulator performance parameters. The results can be used as a guideline to design compact and wideband optical modulators using plasmonic technology

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Publication Date

Mon Jan 01 2024

Journal Name

Anais Da Academia Brasileira De Ciências

Morphological study for Accipitrid birds (Accipitridforms, Accipitridae) in Iraq; part two

A part two of Accipitridae Family members that belong to three genera: Circus

Gyps

and Neophron were documented as morphometrics

distribution ranges

and conservation status were reviewed and comprehensively discussed. A total of 29 voucher specimens belong to six species which are conserved in the “Iraq Natural History Research Center and Museum INHM” as follow: Marsh Harrier Circus aeruginosus (Linnaeus

1758)

Hen Harrier Circus cyaneus (Linnaeus

1766)

Montagus Harrier Circus pygargus (Linnaeus

1758)

Pallid Harrier Circus macrourus (Gmelin

1770)

Egyptian vulture Neophron percnopterus (Linnaeus

1758)

and Griffon vulture Gyps fulfus (Hablitz

1783). The results revealed significant criteria about near threatened NT species IUCN and Birdlife International listed as Pallid Harrier Circus macrourus

and Endangered (EN) species as Egyptian vulture Neophron percnopterus globally decreasing population trend.

HIND D.

KHALIDA I.

AFKAR M.

SUHAD Y.

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Publication Date

Fri Nov 01 2019

Journal Name

Journal Of Global Pharma Technology

Synthesis and Phase Transition Study of New Mesogence Derived from 1, 4-Phenylenediamine

Alaa N.

Nisreen

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This work include synthesized and characterization the compound [I] by reaction 1,4-phenylenediamine with chloro acetic acid then this compound reaction with methanol in present sulfuric acid to synthesized ester compound [II] after that reaction with hydrazine hydrate to synthesized acide hydrazide [III] and the later compound reaction with substituted acetophenone[IV]n to synthesized substituted acetophenone hydrazones[V-XI]. In addition synthesized4-formylpyrazole derivatives [XIIXVIII] via cyclisation substituted acetophenone hydrazones [V-XI] with Vilsmeier-Haack reagent DMF/POCl3. The compounds characterized by melting points, FTIR, 1HNMR and mass spectroscopy. The mesomorphic behavior studied by using polarized optical microscopy and

Publication Date

Mon Oct 09 2023

Journal Name

Nasaq

A Critical Formalistic Reading in Emily Dickinson’s I felt a Funeral, in my Brain and T.S.Eliot’s The Love Song of J. Alfred Prufrock

ASMAA

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A CRITICAL OVERVIEW IN SELECTED POEMS

Publication Date

Tue Jul 01 2025

Journal Name

Russian Journal Of Physical Chemistry A

Electrochemical and Theoretical Study of the Corrosion Inhibition of Carbon Steel Using 3-Allyl-2-mercaptoquinazolin-4(3H)-one in an Acidic Environment

corrosion inhibition

quinazolinone derivative

DFT

mechanism of adsorption

organic inhibitor

Alaa Abd

Oday H. R.

Ali J. A.

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This study investigates the corrosion inhibition performance of a newly synthesized quinazolinone derivative, AMQ, on mild steel in a hydrochloric acid medium. The inhibition efficiency was evaluated using potentiodynamic polarization at varying inhibitor concentrations (100–250 ppm) and temperatures (303– 333 K). The results showed that AMQ exhibited effective corrosion inhibition, with the highest efficiency of 74% observed at 250 ppm and 323 K. Density Functional Theory (DFT) calculations were conducted to study the electronic properties of AMQ and its adsorption behavior. The thermodynamic parameters, including activation energy, enthalpy, and Gibbs free energy, were calculated, indicating spontaneous adsorption of AMQ onto the meta

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Publication Date

Wed Dec 30 2009

Journal Name

Iraqi Journal Of Physics

Study of Some Structural Properties of Porous Silicon Preparing by Photochemical Etching

Porous silicon

Photochemical

Structural properties

Ghaida S.

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Porous Silicon (PSi) has been produced in this work by using Photochemical (PC) etching process by using a hydrofluoric acid (HF) solution. The irradiation has been achieved using quartz- tungsten halogen lamp. The influence of various irradiation times on the properties of PSi اmaterial such as layer thickness, etching rate and porosity was investigated in this work too.
The XRD has been studied to determine the crystal structure and the crystalline size of PSi material

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Publication Date

Mon Dec 18 2017

Journal Name

Al-khwarizmi Engineering Journal

Effect of Magnesium Addition on Corrosion Resistance of Aluminum -17%Silicon Alloy

Al-Si Alloys

magnesiumaddition

corrosion behavior

microstructure

Muna Khethier

Khairia Salman

Kayser Aziz

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The electrochemical behavior of Al-17%Si alloy is investigated in 3.5wt% NaCl solution. Many alloys with addition of the different wt% magnesium metal of 1wt%, 2%, 3wt% ,4.5wt% ,and 9wt% were prepared by gravity die casting . The microstructures of prepared alloys were examined by optical and SEM microscopes. Corrosion behavior was investigated by using potentiostat instrument under static potentials test and corrosion current was recorded to determine corrosion resistance of all prepared samples. It was found that the addition of Mg metal improves the corrosion resistance of Al-17%Si alloy in 3.5%NaCl solution. The alloy containing 1%Mg shows less corrosion rate than the others while the alloys containing 4.5%Mg, 9%Mg content have

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(2)

Publication Date

Tue Dec 01 2009

Journal Name

Iraqi Journal Of Physics

Study of Some Structural Properties of Porous Silicon Preparing by Photochemical Etching

Keywords:Porous silicon

Photochemical

Structural properties

Nathera

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Abstract:Porous Silicon (PSi) has been produced in this work by using Photochemical (PC) etching process by using a hydrofluoric acid (HF) solution. The irradiation has been achieved using quartz- tungsten halogen lamp. The influence of various irradiation times on the properties of PSi اmaterial such as layer thickness, etching rate and porosity was investigated in this work too. The XRD has been studied to determine the crystal structure and the crystalline size of PSi material

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Publication Date

Thu Jan 01 2015

Journal Name

Journal Of Plant Interactions

Photosynthetic and biochemical characterization of in vitro-derived African violet (<i>Saintpaulia ionantha</i>H. Wendl) plants to ex vitro conditions

Yaser Hassan

Mohammed El-Sayed

Hanady Salim

Hail Z

Jaime A Teixeira

Michael P

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(19)

Publication Date

Thu Jul 23 2026

Journal Name

Imam Ja'afar Al-sadiq University Journal Of Legal Studies

The legal framework for the protection of new plant varieties

Lama

Huda

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TRIPS agreement was The first to apply protection by patents. However, this type of protection, which grants exclusive and monopoly rights to patent owners, came at the expense of developing countries which are considered rich in biodiversity and also at the expense of traditional and poor knowledge of modern technologies. The release of new plant varieties has led to the emergence of biopiracy and looting of the rights of developing countries without a license

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Publication Date

Sat Jul 30 2022

Journal Name

Global Academic Journal Of Linguistics And Literature

A Critical Stylistic Analysis of Transcultural Identity in Lyer’s The Global Soul (2001) Using the Tool of Negation

Nawal Fadhil

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This study is intended to examine the concept of transcultural identity in the travel book The Global Soul: Jet Lag, Shopping Malls, and the Search for Home by (Iyer, 2001). Jeffries’ model of critical stylistics (2010) (henceforth, CS) has been selected to analyze the book. To be more specific, Negation is selected to analyze the concept under study. As such, the study aims at finding out how Negation is used to portray ideological meanings representing the concept of transcultural identity in one non-fictional travel book; and finding out the ideologies related to the concept analyzed. The analysis of the data shows that Negation is a suitable analytical tool to reach the ideational meaning of the text towards the concept of tra

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