"Optoelectronic Devices" is a comprehensive textbook covering the fundamental principles, design, and applications of optoelectronic devices. The book explores the interaction between light and electronic systems, addressing topics such as semiconductor physics, optical properties of materials, and device fabrication techniques. It covers a wide range of optoelectronic devices including light-emitting diodes (LEDs), lasers, photodetectors, solar cells, and optical fibers. The text also discusses key concepts such as band theory, optical waveguides, and optoelectronic integration. With practical examples and illustrations, "Optoelectronic Devices" serves as a valuable resource for students, researchers, and engineers interested in the field of optoelectronics.