Ahmed Nabih Zaki Rashed

faculty of electronic engineering menoufia university · Electronics and Electrical Communications Engineering

Aims: Oxidative stress also plays an important role in the pathogenesis of diabetic neuropathy (DN). Both resveratrol (RES) and exercise (EX) have potent anti-oxidative benefits. Low levels of nerve growth factor (NGF) and SIRT1 (a member of sirtuin family) have been reported in patients with DN. The current study has been designed to investigate...

This work states triband meander line base antenna with asymmetric Co-planar wave guide feed applicable for Wi-MAX, North American Public safety and Satellite Applications across the operating frequency of (5.3 GHz, 6.6 GHz, and 8.1 GHz). The proposed antenna with a compact size of 25 × 25 × 1.6 mm 3 is designed using Ansys electronics desktop soft...

The properties of PCF have been emerged as an interesting field of research for sensing and detection of wavelengths of different refractive indices. These properties indicate that if analyte is used or not in the core of the PCF that does not influence on the sensor sensitivity. By reshaping the airhole's size, wavelength sensitivity can be improv...

The optical add drop multiplexers (OADMs) to be modeled and analyzed depends up on the simulation variables are demonstrated. Transmitted power per channel variations are studied against both fiber length and number of transmitted channels at receiver bandwidth of 40 GHz and temperature of 25°C. Received power from each channel variations are demon...

This paper reported the numerical estimation of co-directional waveguide grating coupler performance transmission characteristics. These dopant materials that are namely phosphorus dopant silica, fluorine dopant silica and boron dopant silica. Transmittivity/reflectivity and three dimension (3D) transmission mesh cross-section of pure silica wavegu...

This study has presented the different suggested compounds based (CAWG) like silicon dioxide (SiO 2), lithium niobate (LiNbO 3) and gallium aluminum arsenide (Ga (1-x) Al (x) As) taking into consideration their operating wavelength range, their operating temperature range, their physical properties, and also their ability to be used in the manufact...

This study has clarified the bipolar alternate mark inversion encoding scheme for performance signature of optical transceiver systems under thermal effects. The light power through optical fiber channel variations with spectral wavelength at various temperature variations are clarified. The total electrical power through PIN receiver at various te...

This work has been clarified the optical differential phase shift keying transceiver systems performance efficiency at high data rate optical systems in the presence of pr doped amplifiers. The Max optical signal power variations after fiber link versus wavelength variations at various system data rates are demonstrated. The total optical power wit...

This paper has clarified the gallium aluminum arsenide and plastic modulators and its element circuit modeling design considerations for high signal processing distance links communications. Modulator circuit model design considerations and equations analysis are taken into account. Modulator source resistance, modulator inductance, and modulator c...

The paper simulates the efficient employment of light sources integrated with both light detectors and free space communication channel under ambient condition effects. The modified duobinary non return to zero line coding system based optical wireless communication channel under light or dense fog level effects. Max. Q factor against OWC reach is...

This work has clarified the noise multiplication and bandwidth of photodetectors employed with Taylor dispersion in micro optical fiber channel system. The simulation performance evaluation of slide and squeeze film damping and fluidics mechanics. The damping ratio versus gap distance for a cantilever beam and a mass suspended from beams are determ...

In this work, a Coaxial fed 2 × 2 array antenna is proposed. This antenna employsfour patch elements, and the individual feedlines are connected to a standard coaxial feed. The size of the antenna is 74.4 × 74.4 mm 2 with a substrate thickness of 1.6 mm. Polyamide is used as a substrate which has a dielectric constant of 4.3. The antenna's operatin...

This study reported the performance evaluation and simulation of passive optical networks for high transmission rates up to 10 Gb/s for possible distance up to 50 km. Laser rate equations, directly modulated laser measured and vertical cavity surface emitting laser (VCSEL) are employed for the measurement of the network performance. Different bit s...

This study has clarified various micro electro mechanical system (MEMS) processes performance evaluation based on MEMSolver simulation software. The spin time against final resist thickness for the spin coating of a thin film of photo resist and the oxidation time versus oxide thickness for silicone dioxide growth for <100> silicon in wet oxide are...

This article has analyzed the splicing and coupling influence of cabling to fibers test links measurements. The simulative study for different free/forced vibration mechanics in MEMS is performed. Relative amplitude frequency plot for a cantilever beam, a double clamped beam (DCB), a cantilever beam with end mass, normal vibration of a clamped beam...

This paper has demonstrated the simulative study of vertical cavity with distributed feedback light sources coupling to the fiber systems. The simulative study of pie-zoresistive, capacitive and piezoelectric sensing for micro electro mechanical system has been clarified. The span against the diaphragm thickness for the square diaphragm, round diap...

Performance evaluation of various distributors and exchange elements configurations in the optical fiber communication system under optimum operating conditions Abstract: This study reported the performance evaluation of various distributors and exchange elements configurations in the optical fiber communication system. The study of different diaph...

The dual-band multi-input multi-output (MIMO) antenna configuration has been proposed in the study where circular rings are placed over the top side, with the lower side integrated into the entire field level, operating at 4.3 and 6.1 GHz applications. To validate the MIMO antenna performance, the measurement has been undertaken. The peak gain valu...

Alerting investigators with practitioners for patient variability in the mobilization of activity undergone in the identification, recognition, and motor impairments subject to patient treatment enhancement. By adapting recognition models to populations, conventional practices associated with machine learning (ML) can enhance patient activity recog...

In this paper, a surface plasmon resonance (SPR) biosensor built on bimetallic layers of Silver, BaTiO3, and transition metal dichalcogenide material (MoS2/ MoSe2/WS2/WSe2) are proposed. The proposed SPR biosensor is based on the attenuated total reflection (ATR) method and relies on the Kretschmann configuration to examine the performance paramete...

The study presents the defected ground structure (DGS) monopole circular ring patch antenna to utilize in wireless applications. Moreover, the design that has been proposed was configured on the FR4 substrate. Initially, the proposed antenna achieves limited gain and bandwidth. The gain and bandwidth can be increased based on the defective ground s...

An unstable bilirubin level in the human blood causes many dangerous health problems, such as jaundice, coronary artery disease, ulcerative colitis, and brain lesions. Therefore, the accurate and early detection of bilirubin concentrations in the blood is mandatory. In this work, a highly sensitive biosensor based on photonic crystal fiber (PCF) fo...

Plasmodium falciparum infections are the most common cause of malaria-related deaths. A significant difference between red blood cells with and without infection can be seen in their refractive indices, which can be used as a key indicator in the diagnosis of this disease. In this manuscript, a surface plasmon resonance (SPR)-based biosensor is sug...

Social distancing is considered as the most effective prevention techniques for combatting pandemic like Covid-19. It is observed in several places where these norms and conditions have been violated by most of the public though the same has been notified by the local government. Hence, till date, there has been no proper structure for monitoring t...

A complex topic such as dermatology makes it one of the most unexpected and challenging professions to diagnose due to the complexities of the subject matter involved. According to dermatology, it is a regular practice to do extensive tests on patients to ascertain the kind of skin illness they have been afflicted duration of time varies from one p...

Machine learning and artificial intelligence have evolved as enablers for automation in various industrial applications. Barker-coded thermography is an active thermal non-destructive testing technique for examining subsurface features in industrial components. This article introduces supervised and unsupervised machine learning models for automati...

This study has outlined simulative study on integrated optical multimode waveguides with guided beams based on the system standardization of elements. Deflection of a cantilever are clarified with a point force at the free end, due to the distributed weight at the beam, with a mass at the free end, and at the free end under acceleration. The bendin...

This work demonstrates Mach-Zehnder electro-optic modulators chirping management in high speed data communication lightwave systems. The link with applied voltage on the modulators arms is clarified. We have analyzed the chirp in MZ lithium niobate modulators output. The resulted signal passed on the channel that consists of the loop control that w...

This paper deals with the visible-light communication (VLC) network system improvement for high bit rate transmission system. The previous model use the visualizer analyzer for the estimate of bit error rate in which the maxi. Q factor is reached to 2.51. The previous study is used free space channel over along length of 200 km by the optical wirel...

This study has clarified the simulation of the nonlinear cross phase modulation (CPM) performance signature in optical fiber telecommunication systems. We have been clarified the max Q factor in relation to Cross phase shift modulation for the previous models and proposed model. The optimum optical power varied with spectral time and wavelength var...

This paper has outlined the simulation study of different operation mode for bit sequence generators variations effects on the transceiver systems efficiency with Manchester coding/decoding technique. The eye diagram signal analyzer after the light receiver is clarified in different mode operation of bit sequence generators. The different mode oper...

This paper clarified the optical fiber communication system links the performance signature for short-indoor applications. The electrical propagation delay time is investigated for copper links. The polystyrene optical link propagation delay time is also analyzed. The optical pulse broadening and the data transmission bit rates in the optical links...

This article has clarified ultralong reach and high data rate optical wireless multiplexing communication systems based on various modulation codes. Optical wireless communications can provide communication at high speed and achieve farther long distance compared to RF links. It is assured that the low bit rates can be used for long distance error-...

Optical fiber signal strength based on Raman optical amplifiers schemes in dense wavelength multiplexed communication systems Abstract: This study has clarified the optical fiber signal strength based on Raman fiber optic amplifiers schemes in dense wavelength multiplexed communication systems. The signal power with, without Amplification in variou...

The work clarified directly measured modulated laser with dual drive measured Mach–Zehnder modulators for signal strength in free space optics (FSO) channel. Peak power after free space communication channel at various propagation distances is measured in the optical time domain. As well as the signal level amplitude quality and data error rates af...

This article has demonstrated the performance parameters optimization of the Giga passive optical networks (PONs) can enhanced with high transmission data rates with various modulation schemes. These modulation schemes are Mach–Zehnder modulator (MZM), electroabsorption modulator (EAM), amplitude modulator (AM), dual drive MZM measured (DDMZMM), el...

The work outlined ideal single mode laser operation with single measured drive phase shift/conventional Mach–Zehnder modulators (MZM) in optical access networks is simulated and analyzed. Maximum signal power level versus spectral wavelength and time domain spectrum after fiber channel based 1.5 splitting ratio conventional/phase shift MZM and Idea...

This paper clarifies the effects of electrical filters with electro-optic modulators variations on the po-wer/signal quality optimization and minimum data error rates reduction. The electro-optic modulators that are namely Mach Zehnder modulator, absorption modulator measured, single-drive Mach Zehnder modu-lator measured, and electro-absorption mo...

This paper has clarified the positive and negative effects of 3.1% germania and 1% fluorine DS fibers in multi-mode silica profile. The group delay and the total fiber dispersion against operating wavelength for PS and various doped silica (DS) fibers are demonstrated and assured by using OptiFiber simulation. The material, waveguide and total fibe...

This work clarified the engagement of both nonlinear XPM/XGM in conventional band applications with the wide band traveling semiconductor optical amplifiers (WBTWSOAs) for passive optical network applications in downstream directions. The max. Q, total output power versus up/down wavelength conversion by using cascaded XPM with XGM at 10 Gbps are s...

This work has demonstrated the performance characteristics of single Bragg grating fiber under various filter impulse functions and grating filter profiles. Single fiber Bragg grating (FBG) power propagation, grating index change, coupling coefficient and apodization variations versus grating length variations is demonstrated at the central wavelen...

Different mode operations based all optical fiber amplifiers with optical differential polarization quadrature phase shift keying transmitter Abstract: This paper simulated the different mode operations based all optical fiber amplifiers with optical differential polarization quadrature phase shift keying transmitter. Gain mode operation, power mod...

The paper reported the single fiber grating profile multi scan parameters for the optimization of the grating parameters by using OptiGrating program. The transmission/reflection spectrum of single grating fiber is reported versus variations of grating wavelength. Input-output pulse intensity of single grating fiber is clarified against the time sp...

The study has outlined grating index difference (GID) and grating order based distributed feedback laser effects on coarse wavelength division multiplexing optical fiber systems. Signal amplitude level (SPL), noise signal level are measured accurately based on various grating order of distributed feedback laser. Max. signal power (MSP), noise signa...

This paper presented the hybrid Raman and erbium doped fiber amplifiers in amplified wavelength division multiplexed systems. Important role of singly and hybrid light amplifiers are clarified in the presented work. EDFA/RAMAN based average power model based Raman amplifiers are used for strength the signal power levels. CW laser with return to zer...

This paper presented the high performance signature of transceiver fiber system based on cascade uniform fiber Bragg grating devices. This model has a data rate of 20 Gb/s extended along optical fiber length of 10 km that amplified with an optical EDFA amplifiers at 5 m length. The presented study clarified max. Q of 20.33 compared to the previous...

The work clarified the empirical laser measured with optical coherent quadrate amplitude modulation receiver for upgrading fiber optic systems. Peak signal amplitude and output power spectrum are measured after light receivers under the control of extinction modulator ratio, radio frequency switching voltage and switching bias voltage. The better t...

Citation: Daher, M.G.; Trabelsi, Y.; Panda, A.; Gevorgyan, A.H.; Abohassan, K.M.; Smirani, L.K.; Altahan, B.R.; Rashed, A.N.Z. Design of a Highly Sensitive Detector Using a Ternary Photonic Crystal (PC) Based on Titanium Nitride Sandwiched between Si and SiO 2 for the Creatinine Concentration Detection in the Blood Serum. Optics 2022, 3, 447-461. h...

The work outlined ideal single mode laser operation with single measured drive phase shift/conven-tional Mach-Zehnder modulators (MZM) in optical access networks is simulated and analyzed. Maximum signal power level versus spectral wavelength and time domain spectrum after fiber channel based 1.5 splitting ratio conventional/phase shift MZM and Ide...

This study presented design and analysis of high-speed data optical fiber communication system through EDFA amplifier system. The design with practical data for parameters to maximize the transmission bit-rate is clarified. The bit rate distance product can be optimized for the improvement of performance of high-speed long haul repeater spacing wit...

In this work, we offer a double-layered side-polished ultra-highly sensitive photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) sensor for various biochemical analyte detection. Gold with titanium oxide (TiO2) as an adhesive layer has been employed acting as the plasmonic material. This study is fully based on simulation with finite...

In this paper, a biosensor based on a Y-shape gold resonator metamaterial structure is simulated to detect biomaterials, such as hemoglobin and urine, using Ge–Sb–Te (GST) as a phase changing material in the infrared wavelength range from 1.2 µm to 1.7 µm. Here, the Y-shaped resonator is placed on top of the GST layer. Simulation results shows that...

Today, basal cancer cells is one of the most frequent diseases on the planet, which is global concern for human health. In order to maximize the success of treatment, early detection is a vital prerequisite. So, a rapid and sensitive detection of cancerous basal cells is a necessary topic. In this paper, a photodetector based on SPR nanostructure c...

Raman optical amplifiers have more reliability than the repeater in the optical communication networks. In the optical amplifier, the transmission equals the gain bandwidth of the amplifiers. The optical amplifier has func-tionalities such as WDM amplification (gain equalization), gain control (rapidly variation of the gain), inter-stage access (co...

This article outlined intermediate/radio frequencies over fiber system performance efficiency measurement for the designed circuit frequencies. Output power, max. Q factor, and optical and electrical signal per noise ratio are also reported against radio and intermediate frequencies for the suggested system with the previous system. The suggested s...

The aim of study is to simulate the impact of nonlinear cross gain modulation effects on optical transceiver communication systems with wide band traveling wave semiconductor optical amplifiers (WBTWSOAs). The max Q and electrical power against active amplifier length variations are simulated without/with nonlinear cross phase modulation (XPM) effe...