Ahmed Nashed Email & Phone Number

Vancouver, Canada Area

I am working as a research scientist at Crosslight with main focus on the development of new features and capabilities for the Photonic Integrated Circuit Simulation (PICS3D) simulation tool.

A. Fabrication and Testing of Continuous Wave Backward Wave Oscillator (CW-BWO) operates at sub-mm/THz regimeAs the issue of a sub-mm high power oscillator is still open, our goals in this project are:1. Fabricate and test several slow wave structures for the BWO.2. Explore the new technologies of electron beams.3. Assemble a pre-tested slow wave structure with the electron beam to realize the BWO.2. Optimization of corporate feed network for X-band applicationIn this… Show more A. Fabrication and Testing of Continuous Wave Backward Wave Oscillator (CW-BWO) operates at sub-mm/THz regimeAs the issue of a sub-mm high power oscillator is still open, our goals in this project are:1. Fabricate and test several slow wave structures for the BWO.2. Explore the new technologies of electron beams.3. Assemble a pre-tested slow wave structure with the electron beam to realize the BWO.2. Optimization of corporate feed network for X-band applicationIn this project, our focus was to minimize the loss budget in an X-band corporate feed network. 1. Verify the design using different commercial software packages and compare them with the measurement results.2. Replace the Wilkinson power divider by the low loss Tee network.3. Optimize the transition between different segments of the transmission lines.C. Design a surface wave based sensorUsing the high sensitivity of the surface waves to the perturbation in the surrounding medium, a low cost and efficient sensor can be designed, 1. Investigate the surface wave in a corrugated metallic structure.2. Design a CPW to corrugated metallic structure transition. Show less

Waterloo, Canada

A. Design a Slow Wave Structure for electromagnetic field generation using Cherenkov radiation.Within this project the following tasks were achieved:1. Implementation and optimization of a numerical modal solver using the FDFD method.2. Design a novel metallic slow wave structure using Photonic Crystal.3.Design experiments to verify the design and simulation results.4.Design a Backward Wave Oscillator using the tested slow wave structureB. Design, implement and… Show more A. Design a Slow Wave Structure for electromagnetic field generation using Cherenkov radiation.Within this project the following tasks were achieved:1. Implementation and optimization of a numerical modal solver using the FDFD method.2. Design a novel metallic slow wave structure using Photonic Crystal.3.Design experiments to verify the design and simulation results.4.Design a Backward Wave Oscillator using the tested slow wave structureB. Design, implement and optimization of a custom-built software to analyze the electron beam-electromagnetic wave interaction1. Using the MATLAB code, an FDTD/PIC simulator for analyzing the interaction between the electromagnetic wave and particle physics was designed. The FDTD/PIC simulator consists of two interconnected simulation packages:-The electromagnetic fields were simulated using the FDTD method.-The Particle In Cell (PIC) was used to track the particle physical parameters.2. Then, the FDTD/PIC simulator was implemented on C++/OpenMP to speed it up.3. Performance evaluation of the designed Backward Wave Oscillator using the FDTD/PIC simulation.4. Optimization of the oscillator to reduce the dissipated power and enhance the overall efficiency.C. Analyze of extremely large problems using FDTD coupled with Ray Tracing (RT) technique.The main objective of this project is to realize a real-time solver for the extremely large electromagnetic problem.Two solvers were used: the FDTD and the Ray Tracing (RT).- A GPU-CUDA based RT was used to define the main radiation directions.- Incorporating the FDTD to define the reflections at different parts of the problem. Show less

Egypt

1. Compile the research results into one conference papers, and writing the thesis.2. Design and optimize a zero-dispersion Bragg fiber waveguide.3. Review the available two dimensions mode solver for guiding structures.

Doctor Of Philosophy (Phd), Rf Engineering

Thesis: Design, Analysis, and Optimization of a Cherenkov Radiation Based Sub-mm/THz BWO Supervised by Prof. Sujeet Chaudhuri and Prof..

Master Of Science (Msc), Rf Enginnering

Thesis: Optical Bragg Fiber Design Supervisor: Prof. Hamdi A. El-Mikati

Bachelor Of Science (Bsc), Electrical, Electronics And Communications Engineering, Excellent With Honors