Harnessing the exceptional electronic, thermal, and optical properties of graphene, this book delves into the convergence of optoelectronics and graphene, offering a comprehensive exploration of their interplay. Optoelectronics, a sub-field of photonics, focuses on the utilization of electronic devices to source, detect, and control light, exploiting quantum mechanical effects in electronic materials, particularly semiconductors. Graphene's intrinsic qualities, including its integration potential, low cost, and compatibility with silicon-based photonic devices, make it an attractive material for optoelectronic applications. This book provides detailed insights into various aspects of optoelectronics, specifically within the context of graphene. Covering topics such as biosignals, noise suppression, multiscale computation, excitonic crystals, bio devices, structuration processes, nonlinear dynamics, and flexible logic gates, it offers a comprehensive overview of modern features and future trends in this rapidly evolving field. With a focus on clarity and accessibility, the text strives to simplify complex concepts, making it an invaluable resource for engineers, researchers, equipment designers, manufacturers, and graduate students interested in telecommunications, optoelectronics, and graphene technology.