Gain and Absorption: Many-Body Effects -- Fabry-Perot Lasers: Temperature and Many-Body Effects -- Fabry-Perot Lasers: Thermodynamics-Based Modeling -- Distributed Feedback Lasers: Quasi-3D Static and Dynamic Model -- Multisection Lasers: Longitudinal Modes and their Dynamics -- Wavelength Tunable Lasers: Time-Domain Model for SG-DBR Lasers -- Monolithic Mode-Locked Semiconductor Lasers -- Vertical-Cavity Surface-Emitting Lasers: Single-Mode Control and Self-Heating Effects -- Vertical-Cavity Surface-Emitting Lasers: High-Speed Performance and Analysis -- GaN-based Light-Emitting Diodes -- Silicon Solar Cells -- Charge-Coupled Devices -- Infrared HgCdTe Optical Detectors -- Monolithic Wavelength Converters: Many-Body Effects and Saturation Analysis -- Active Photonic Integrated Circuits.Optoelectronic devices transform electrical signals into optical signals and vice versa by utilizing the sophisticated interaction of electrons and light within micro- and nano-scale semiconductor structures. Advanced software tools for design and analysis of such devices have been developed in recent years. However, the large variety of materials, devices, physical mechanisms, and modeling approaches often makes it difficult to select appropriate theoretical models or software packages. This book presents a review of devices and advanced simulation approaches written by leading researchers and software developers. It is intended for scientists and device engineers in optoelectronics, who are interested in using advanced software tools. Each chapter includes the theoretical background as well as practical simulation results that help to better understand internal device physics. The software packages used in the book are available to the public, on a commercial or noncommercial basis, so that the interested reader is quickly able to perform similar simulations.