Active optical devices

Active optical devices are components that actively modify or generate light within optical systems. They typically include lasers, optical amplifiers, and modulators, which can produce, amplify, or control light signals. These devices are essential in telecommunications, medical instruments, and laser technology because they manage the intensity, wavelength, or timing of light to transmit data or perform precise tasks. Unlike passive devices (like lenses or mirrors), active devices require external power to operate and play a critical role in enhancing the capabilities and performance of optical systems.