Browsing Articles by Author "Rashed, Ahmed Nabih Zaki"

Now showing items 1-13 of 13

Beam Divergence and Operating Wavelength Bands Effects on Free Space Optics Communication Channels in Local Access Networks

Alatwi, Aadel M.; Rashed, Ahmed Nabih Zaki; Parvez, AHM Shahriar; Paul, Bikash Kumar; Ahmed, Kawsar (Walter de Gruyter GmbH, 2020-08-08)

The paper outlines the divergence of beam and operating wavelength bands effects on free-space optics communication channels in local access networks. The max Q factor and min bit error rate are measured based on the ...
Brain Tumor Auto-Segmentation on Multimodal Imaging Modalities Using Deep Neural Network

Hossain, Elias; Hossain, Md. Shazzad; Hossain, Md. Selim; Jannat, Sabila Al; Huda, Moontahina; Alsharif, Sameer; Faragallah, Osama S.; Eid, Mahmoud M. A.; Rashed, Ahmed Nabih Zaki (Daffodil International University, 2022-02-16)

Due to the difficulties of brain tumor segmentation, this paper proposes a strategy for extracting brain tumors from three-dimensional Magnetic Resonance Image (MRI) and Computed Tomography (CT) scans utilizing 3D U-Net ...
Chirped Large Mode Area Photonic Crystal Modal Fibers and Its Resonance Modes Based on Finite Element Technique

Amiri, Is; Rashed, Ahmed Nabih Zaki; Sarker, Kaushik; Paul, Bikash Kumar; Ahmed, Kawsar (Journal of Optical Communications, 2019-07-23)

The study has outlined the finite element technique used for the fiber modal analysis of photonic crystal fiber (PCF) structure with a hexagonal/circular air holes arrangement on the cladding of pure fiber-optic silica. ...
Conventional/phase Shift Dual Drive Mach-Zehnder Modulation Measured Type Based Radio Over Fiber Systems

Amiri, S; Rashed, Ahmed Nabih Zaki; Rahman, Ziaur; Paul, Bikash Kumar; Ahmed, Kawsar (Journal of Optical Communications, 2020-04-14)

This work clarified the conventional/phase shift dual Mach–Zehnder modulation measured technique for upgrading radio over fiber (ROF) systems. Four levels of pulse amplitude modulation and non-return to zero code scheme ...
Design of D-shaped Elliptical Core Photonic Crystal Fiber for Blood Plasma Cell Sensing Application

Ahmed, Kawsar; Paul, Bikash Kumar; Vasudevan, B.; Rashed, Ahmed Nabih Zaki; Maheswar, R.; Amiri, I.S.; Yupapin, P. (Results in Physics, Elsevier, 2019-03)

In this research, the proposed design presents the compact sensing performances while infiltrating the blood fluid in the central hole of the D-shaped elliptical dual-core photonic crystal fiber (PCF) configuration. The ...
The Effects of Tx./Rx. Pointing Errors on the Performance Efficiency of Local Area Optical Wireless Communication Networks

Eid, Mahmoud M. A.; Rashed, Ahmed Nabih Zaki; Ahammad, Mohd. Sultan; Paul, Bikash Kumar; Ahmed, Kawsar (Scopus, 2021)

This study presents the effects of Tx./Rx. Pointing errors on the performance efficiency of local area optical wireless communication networks. The received signal power and max Q factor are measured in the presence of ...
Hexa-Sectored Square Photonic Crystal Fiber for Blood Serum and Plasma Sensing with Ultralow Confinement Loss

Asaduzzaman, Sayed; Rehana, Hasin; Chakma, Rana; Faragallah, Osama S.; El‑Sayed, Hala S.; Eid, Mahmoud M. A.; Rashed, Ahmed Nabih Zaki (Daffodil International University, 2022-05-06)

This study suggested a novel hexa-sectored square photonic crystal fiber (HS-SPCF) for blood serum and blood plasma sensing. The proposed HS-SPCF depicts an eminent sensitivity of blood plasma 66.7% and blood serum73.4% ...
Non Return to Zero Line Coding With Suppressed Carrier in Fso Transceiver Systems Under Light Rain Conditions

Rashed, Ahmed Nabih Zaki; Daher, Malek G.; Ahammad, S. K. Hasane; Montalbo, Francis Jesmar Perez; Sorathiya, Vishal; Asaduzzaman, Sayed; Rehana, Hasin; Zuhayer, Asif (Daffodil International University, 2022-07-20)

This paper aims to simulate performance efficiency of carrier suppressed non return to zero line coding based FSO transceiver systems under light rain conditions with amplification units at 40 Gbps. The max. Q, BER and ...
Performance Enhancement of Fiber Optic and Optical Wireless Communication Channels by Using Forward Error Correction Codes

Amiri, I. S.; Rashed, Ahmed Nabih Zaki; Parvez, A.H.M Shahariar; Paul, Bikash Kumar; Ahmed, Kawsar (Scopus, 2020)

The study has outlined the different correction codes based optical wireless communication channel and security management in free space optics communication systems. The used codes that are namely forward error correction ...
Polar Polarization Mode and Average Radical Flux Intensity Measurements Based on All Optical Spatial Communication Systems

Amiri, S.; Rashed, Ahmed Nabih Zaki; Jahan, Sohely; Paul, Bikash Kumar; Ahmed, Kawsar (Journal of Optical Communications, 2019-10-19)

This study presents the polar polarization mode and average radical intensity flux distribution measurements based on all optical spatial communication systems. The numerical technique that is applied with the simulation ...
Signal Propagation Parameters Estimation Through Designed Multi Layer Fibre With Higher Dominant Modes Using OptiFibre Simulation

Rashed, Ahmed Nabih Zaki; Ahammad, SK. Hasane; Daher, Malek G.; Sorathiya, Vishal; Siddique, Abrar; Asaduzzaman, Sayed; Rehana, Hasin; Dutta, Nitul; Patel, Shobhit K.; Nyangaresi, Vincent Omollo; Jibon, Rayhan Habib; Ibrahim, Anas (Daffodil International University, 2022-06-23)

The aim and scope of the paper is to simulate the signal propagation parameters estimation through designed multi-layer fibre with higher dominant modes by using OptiFibre simulation software. The multi-layer fibre profile ...
Spatial Single Mode Laser Source Interaction With Measured Pulse Based Parabolic Index Multimode Fiber

Rashed, Ahmed Nabih Zaki; Shaik, Hasane Ahammad; Sorathiya, Vishal; Daher, Malek G.; Siddique, Abrar; Asaduzzaman, Sayed; Rehana, Hasin; Dutta, Nitul; Patel, Shobhit K.; Nyangaresi, Vincent Omollo; Jibon, Rayhan Habib; Abdelhamid, Huda Said (Daffodil International University, 2022-06-21)

The study clarified spatial single mode laser interaction with measured pulse based parabolic index multimode fiber. Peak power level margin, maximum/minimum signal amplitude margin after parabolic index multimode fiber ...
Technical Specifications of the Submarine Fiber Optic Channel Bandwidth/Capacity in Optical Fiber Transmission Systems

Amiri, IS; Rashed, Ahmed Nabih Zaki; Jahan, Sohely; Paul, Bikash Kumar; Ahmed, Kawsar; Yupapin, P. (Journal of Optical Communications, 2019-11-09)

This work outlines technical specifications of the undersea fiber optic communication channel bandwidth, capacity with taken into account the maximum and minimum extended fiber cost in the presence of amplifiers stations. ...

Browsing Articles by Author "Rashed, Ahmed Nabih Zaki"

Browsing Articles by Author "Rashed, Ahmed Nabih Zaki"

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