Optoelectronic devices deal with light, and they function to control, detect, or generate it. These devices serve many various applications across different segments and are a rapidly expanding field of technology. Light that optoelectronics are concerned with include visible, infrared, gamma, x-ray, and ultraviolet (UV). Often, these optoelectronic devices will use detected light as a way to transform light signals into electrical signals for various processes or functionalities. In this blog, we will discuss the principles of optoelectronics, common examples of such devices, as well as their advantages and disadvantages.