This book presents comprehensive information on the latest advancements in the fields of electronics and electrical engineering. This book aims to provide readers with an understanding of the electronics and electrical engineering fields, as well as to inspire them to be in these areas. The book covers a wide range of topics, including optical systems, power transmission, cryptography, robotics, smart grids, optical communications, and laser systems. The authors have drawn from their extensive experience in these fields to provide insightful analysis and practical recommendations for those who work in these areas. This book is intended for a wide audience, including students, researchers, engineers, and professionals in the fields of electronics and electrical engineering.