Textbook in PDF format As wireless networks evolve into the era of 5G, 6G, and THz technologies, Microwave Photonics is rapidly emerging as a cornerstone for high-frequency communication, advanced sensing, and next-generation radar systems. Yet designing these complex systems demands more than theory – it requires mastery of practical, simulation-based techniques. Simulation Techniques in Microwave Photonics Systems is a comprehensive guide that brings together the theory and hands-on simulation of modern microwave photonic architectures. Using industry-leading platforms, OptiSystem and ADS (Advanced Design System), this book walks the reader through the design, modeling, and analysis of photonic subsystems for high-frequency RF applications