Post by Mohamed Azony

🚀 Just wrapped up an exciting project on Electro-Optic Modulators (EOMs)—where fundamental electromagnetics meets next-gen optical communications! As part of our NANENG 231: Electromagnetics course at Zewail City of Science and Technology, my team and I dove deep into the physics and engineering behind Mach-Zehnder Interferometer (MZI) modulators. What we covered: 🔹 Rigorous derivation of the Pockels effect from Maxwell's equations and nonlinear polarization theory 🔹 Phase-to-intensity conversion via MZI structure and the critical half-wave voltage (Vπ) design parameter 🔹 Real-world challenges in high-speed modulators: the walk-off effect, velocity matching between RF microwaves and optical carriers, and energy conservation via Poynting's theorem The highlight? We analyzed a cutting-edge 2026 paper on thin-film lithium niobate (TFLN) modulators by Xue et al. and even proposed our own theoretical improvement—engineering boundary conditions with a dielectric capping layer to maximize field overlap and reduce driving voltage. It's fascinating to see how the push for faster 5G/6G networks isn't just a software problem—it's fundamentally applied electromagnetics. Understanding how fields propagate, interact, and refract at boundaries is the key to unlocking the next generation of global communication. Team: Youssef Ahmed Mohamed, Mohamed Azony, mohab mahmoud #Electromagnetics #OpticalCommunications #Photonics #ElectroOpticModulators #LithiumNiobate #5G #6G #Engineering #ZewailCity #AppliedPhysics #Telecommunications