Opto-Electronics is a branch of technology that involves the study and application of devices and systems that interact with both light (optical) and electricity (electronics). It focuses on the use of photons (particles of light) to control or manipulate electronic signals. Opto-electronic devices include components like LEDs (Light Emitting Diodes), photodiodes, phototransistors, and optical fibers. They find applications in telecommunications, optical sensors, displays, and optical data transmission systems, allowing the conversion of electrical signals to optical signals or vice versa. Opto-electronics plays a significant role in modern technology, enabling advancements in communication, data transmission, and sensing.