Performances Study of PSK and ASK Modulation Technique under Atmospheric Turbulence in FSO Communication System
Performances Study of PSK and ASK Modulation Technique under Atmospheric Turbulence in FSO Communication System

Esraa K. Al – Gazzi; Ekbal H. Ali; Assel J. Mohammed

Volume 42, Issue 2 , February 2024, , Page 276-287

https://doi.org/10.30684/etj.2023.143196.1567

Abstract
  The performance and reliability of a free-space optical (FSO) communication system can be greatly increased using various methods. The primary goal of each technique is to reduce the ...  Read More ...
Performance Analysis of Underwater Optical Communication System in Turbulent Link
Performance Analysis of Underwater Optical Communication System in Turbulent Link

Murtadha M. Joudha; Jassim K. Hmood; Salah A. Adnan

Volume 41, Issue 8 , August 2023, , Page 1082-1090

https://doi.org/10.30684/etj.2023.138423.1393

Abstract
  Underwater wireless optical communication (UWOC) systems have been identified as a suitable replacement technology with high data rates over relatively medium transmission ranges for ...  Read More ...
Fabrication of Silver Nanoparticles in Aqueous Solution by Laser Technique and Study of Their Hemocompatibility and Antibacterial Effects Against Dental Decay Bacteria
Fabrication of Silver Nanoparticles in Aqueous Solution by Laser Technique and Study of Their Hemocompatibility and Antibacterial Effects Against Dental Decay Bacteria

Ruaa H. Abbas; Azhar M. Haleem; Abdulhadi K. Judran

Volume 41, Issue 4 , April 2023, , Page 543-552

https://doi.org/10.30684/etj.2023.136922.1329

Abstract
  Silver nanoparticles (Ag NPs) were prepared by laser ablation of a silver bulk immersed in cetrimonium bromide (CTAB). The immersed sheet was focused by a pulsed Nd:YAG laser at 1064 ...  Read More ...
The Structural and Optical Investigation of Grown GaN Film on Porous Silicon Substrate Prepared by PLD
The Structural and Optical Investigation of Grown GaN Film on Porous Silicon Substrate Prepared by PLD

Haneen D. Jabar; Makram A. Fakhri; Mohammed J. AbdulRazzaq; Subash C. B. Gopinath

Volume 41, Issue 2 , February 2023, , Page 270-279

https://doi.org/10.30684/etj.2022.135733.1281

Abstract
  The optical properties of a grown gallium nitride (GaN) thin film on a porous silicon (P-Si) substrate was investigated. A Photo-electrochemical etching method was used to synthesize ...  Read More ...
Artificial Neural Network-Based Transmission Power Control for Underwater Wireless Optical Communication System
Artificial Neural Network-Based Transmission Power Control for Underwater Wireless Optical Communication System

Omar N. Mohammed Salim; Salah A. Adnan; Ammar H. Mutlag

Volume 41, Issue 2 , February 2023, , Page 456-466

https://doi.org/10.30684/etj.2022.136247.1309

Abstract
  Several scientists have proposed using an underwater wireless optical communication system (UWOC) to deliver high-speed data services using the abundant optical spectrum. However, wireless ...  Read More ...
Study the Effect of Laser Wavelength on ZnO Nanoparticle Characteristics Synthesized by Pulse Laser Ablation as an Antibacterial Application
Study the Effect of Laser Wavelength on ZnO Nanoparticle Characteristics Synthesized by Pulse Laser Ablation as an Antibacterial Application

Hadeel J. Imran; Kadhim A. Hubeatir; Kadhim A. Aadim

Volume 40, Issue 10 , October 2022, , Page 1307-1317

https://doi.org/10.30684/etj.2022.134261.1232

Abstract
  In recent years, biologists, chemists, materials scientists, and engineers have become interested in Nano-sized particles because of their unique properties. In this paper, ZnO nanoparticles ...  Read More ...
Effect of Different Parameters on Raman Scattering Released from Nb2O5 Nanostructures Prepared via PLD Technique
Effect of Different Parameters on Raman Scattering Released from Nb2O5 Nanostructures Prepared via PLD Technique

Evan T. Salim; Suhair R. shafeeq; Mohammed Jalal AbdulRazzaq; Mohammed H. A. Wahid

Volume 40, Issue 10 , October 2022, , Page 1325-1333

https://doi.org/10.30684/etj.2022.134436.1238

Abstract
  Due to the significance of Nb2O5 as a promising industrial and biomedical material and the importance of Raman analyses to identify nanostructural molecular responsivity for various ...  Read More ...
The Fundamental of Reduced Graphene Oxide with Nanosilver Composite Films Using the Spin Coating Technique
The Fundamental of Reduced Graphene Oxide with Nanosilver Composite Films Using the Spin Coating Technique

Hamsa A. Alaloosi; Farah T. M. Noori; Abdulhadi K. Jidran

Volume 40, Issue 8 , August 2022, , Page 1023-1028

https://doi.org/10.30684/etj.v40i8.2205

Abstract
  Graphene oxide synthesis by hummers method and reduction by the green chemical method using green tea. Preparation films with reduced graphene oxide (rGO) and Silver Nanoparticles (AgNPs) ...  Read More ...
The Visual Quality of Healthy Eye Lens for Different Tilt Effects
The Visual Quality of Healthy Eye Lens for Different Tilt Effects

Laith A. Tawfeeq; Ali H. Al-Hamdani

Volume 40, Issue 8 , August 2022, , Page 1029-1034

https://doi.org/10.30684/etj.v40i8.2197

Abstract
  The importance and accuracy of the human visual system have led scientists and researchers to do their best to study it, know its problems, and how to treat them.The eye lens tilt is ...  Read More ...
Theory and Modeling of Slab Waveguide Based Surface Plasmon Resonance
Theory and Modeling of Slab Waveguide Based Surface Plasmon Resonance

Amnah S. Hasan; Razi J. Al-azawi; Ali A. Alwahib

Volume 40, Issue 8 , August 2022, , Page 1082-1089

https://doi.org/10.30684/etj.2022.132295.1100

Abstract
   The current study proposes a developing surface plasmon resonance (SPR) sensor that has been widely employed to detect viruses, such as environmental analytes, biological and ...  Read More ...
Numerical Simulation of the Self-Imaging at Different Cascaded Optical Fiber Specifications
Numerical Simulation of the Self-Imaging at Different Cascaded Optical Fiber Specifications

Shahad I. Younus; Anwaar A Al-Dergazly; Abdulla K. Abass

Volume 40, Issue 2 , February 2022, , Page 412-421

https://doi.org/10.30684/etj.v40i2.2236

Abstract
  Cascaded optical fiber single mode-no core-single mode fiber (SNS) attracted attention for being the base of various photonic devices. These devices are used in optical communication, ...  Read More ...
Physical Properties of Pure Gold Nanoparticles and Gold Doped ZnO Nanoparticles Using Laser Ablation in Liquid For Sensor Applications
Physical Properties of Pure Gold Nanoparticles and Gold Doped ZnO Nanoparticles Using Laser Ablation in Liquid For Sensor Applications

Nabaa K. Hassan; Makram A Fakhri; Evan T. Salim

Volume 40, Issue 2 , February 2022, , Page 422-427

https://doi.org/10.30684/etj.v40i2.2242

Abstract
  In this paper, the effect of using laser ablation of pure gold targets to obtain gold Nano rods and for pure zinc targets to obtain zinc oxide nanoparticles was studied separately in ...  Read More ...
Performance Comparison of Serial and Parallel Hybrid Fiber Amplifier under Optimum Pump Conditions
Performance Comparison of Serial and Parallel Hybrid Fiber Amplifier under Optimum Pump Conditions

Aseel A. Khudhaier; Abdulla K. Abass; Mudhafer H. Ali

Volume 40, Issue 2 , February 2022, , Page 428-432

https://doi.org/10.30684/etj.v40i2.2183

Abstract
  In this work, two different configurations of hybrid fiber optic amplifiers are investigated and simulated via OptiSystem 7.0 software, namely, serial and parallel hybrid fiber optical ...  Read More ...
Pentacene Based Organic Field Effect Transistor Using Different Gate Dielectric
Pentacene Based Organic Field Effect Transistor Using Different Gate Dielectric

Ayat Kadhim; Estabraq Abdullah; Abdulhadi K. Judran

Volume 39, Issue 11 , November 2021, , Page 1688-1692

https://doi.org/10.30684/etj.v39i11.2075

Abstract
  This paper presents the electrical behavior of the top contact/ bottom gate of an organic field-effect transistor (OFET) utilizing Pentacene as a semiconductor layer with two distinctive ...  Read More ...