Essentials of Optoelectronics, Third Edition describes the entire range of optoelectronic principles and techniques in detail. The book presents a new approach, concentrating on physical principles, demonstrating their interdependence, and gives insight into the underlying physical processes while being readable, easy to follow, and entirely self-contained. In addition to offering a comprehensive treatment of the optical and electronic principles that form the foundation of optoelectronics, this book covers the fundamentals and provides detailed coverage of lasers, waveguides including nonlinear optics, optical signal processing, and optical computing.