Výsledky vyhledávání - "Shimaa El-Meadawy"

Akademický článek

The effect of using different materials on erbium-doped fiber amplifiers for indoor applications

Autor: Ahmed Nabih Zaki Rashed, Mohammed Salah F. Tabbour, Shimaa El-Meadawy, Toni Anwar, Aliza Sarlan, P. Yupapin, I.S. Amiri

Publikováno v: Results in Physics, Vol 15, Iss , Pp - (2019)

This paper investigated the different materials of optical fibers, two of them are plastic optical fibers that are namely polysulfone (PSU)/vinyl-phenyl acetate (VPAC) with refractive indices of 1.63/1.567, and the second plastic material namely sapp

Externí odkaz: https://doaj.org/article/a45fd1e629084337b92b1841654d332c

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Proposal of Hybrid N OAM-MPPM Technique for Gamma-Gamma Turbulence Channel With Pointing Error and Different Deep Learning Techniques

Autor: Hossam M. H. Shalaby, Shimaa El-Meadawy, Abeer D. Algarni, Walid El-Shafai, Ahmed E. A. Farghal, Naglaa F. Soliman, Fathi E. Abd El-Samie, Nabil A. Ismail

Publikováno v: IEEE Access, Vol 10, Pp 10295-10309 (2022)

A hybrid multi-state orbital angular momentum-multi pulse-position modulation ( $N$ OAM-MPPM) scheme over gamma-gamma free-space optical ( ${\Gamma \Gamma }$ -FSO) channel is studied in this paper. In our study, all atmospheric and pointing error imp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7683020bb26bbd69be4777c87bada83d
https://ieeexplore.ieee.org/document/9611214/

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Performance Analysis of 3D Video Transmission Over Deep-Learning-Based Multi-Coded N-ary Orbital Angular Momentum FSO System

Autor: Walid El-Shafai, Mohammed Abd-Elnaby, Shimaa El-Meadawy, Fathi E. Abd El-Samie, Nabil A. Ismail, Ahmed E. A. Farghal, Hossam M. H. Shalaby

Publikováno v: IEEE Access, Vol 9, Pp 110116-110136 (2021)

Orbital angular momentum-shift keying (OAM-SK), which is the rapid switching of OAM modes, is vital but seriously impeded by the deficiency of OAM demodulation techniques, particularly when videos are transmitted over the system. Thus, in this paper,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d614ad4bf4434fbd8aa273931f5c4df
https://doi.org/10.1109/access.2021.3083524

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Efficient and Secure Bit-Level Chaos Security Algorithm for Orbital Angular Momentum Modulation in Free-Space Optical Communications

Autor: Hossam M. H. Shalaby, Mohammed Abd-Elnaby, Walid El-Shafai, Ahmed E. A. Farghal, Nabil A. Ismail, Fathi E. Abd El-Samie, Shimaa El-Meadawy

Publikováno v: IEEE Access, Vol 9, Pp 74817-74835 (2021)

Currently, secure multimedia applications are becoming a very hot research topic, specifically over the Internet and wireless communication networks due to their rapid progress. Several researchers have implemented various chaotic image and video enc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a4a91fb2b8125809c1ee8ffdaffa123
https://ieeexplore.ieee.org/document/9410529/

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High data rates in optic fiber systems based on the gain optimization techniques

Autor: Abd El-Naser A. Mohammed, Shimaa El-Meadawy, Ahmed Nabih Zaki Rashed, Mahmoud M. A. Eid

Publikováno v: Journal of Optical Communications.

The signal gain is improved by nearly about 15 dB by using the hybrid optical amplifiers technique. The gain flattened filter technique has outlined a larger value of signal gain than the hybrid optical amplifiers technique by about 17 dB whereas the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc1c449e431832db8d68c63c3ddbb2a6
https://doi.org/10.1515/joc-2021-0017

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Wavelength division multiplexing developed with optimum length-based EDFA in the presence of dispersion-compensated fiber system

Autor: Shimaa El-Meadawy, Ahmed Nabih Zaki Rashed, Abd El-Naser A. Mohammed, Mahmoud M. A. Eid

Publikováno v: Journal of Optical Communications.

This work outlines 80-channel wavelength multiplexing that has been developed with optimum length-based erbium-doped fiber amplifier (EDFA) with dispersion-compensated fiber. This paper has presented different fiber mediums with different effective a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fb89e532d19ed9d70d3e0c9450a8858
https://doi.org/10.1515/joc-2020-0302

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Best selected optical fibers with wavelength multiplexing techniques for minimum bit error rates

Autor: Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed, Md. Ahasan Habib, Shimaa El-Meadawy

Publikováno v: Journal of Optical Communications.

In this study, six different types of optical fibers (SMF, HNLF, HNL-DFF, NZDSF, LEAF (step core) and LEAF (ring core)) can be used for different number of channels (16, 32, 64, and 80) at different bit rates to calculate the quality factor for these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f94d9cc284206a922a693079183b3198
https://doi.org/10.1515/joc-2020-0239

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Simulation study of signal gain optimization based on hybrid composition techniques for high-speed optically dense multiplexed systems

Autor: Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed, Kawsar Ahmed, Shimaa El-Meadawy

Publikováno v: Journal of Optical Communications.

This study created a 13 Gb/s transmission speed per 300 channel dense wavelength division multiplexing system based on hybrid optical fiber amplifiers and filter techniques to enhance signal gain. The filter techniques used here included a hybrid opt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9bcf3278ce5e374558d5bdb7134dfee5
https://doi.org/10.1515/joc-2020-0150

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