Wiktionary
n. (context sciences English) the science and technology of generating and controlling photons, particularly in the visible light and near infrared light spectrum
Wikipedia
Photonics is the science of light ( photon) generation, detection, and manipulation through emission, transmission, modulation, signal processing, switching, amplification, and detection/sensing. Though covering all light's technical applications over the whole spectrum, most photonic applications are in the range of visible and near- infrared light. The term photonics developed as an outgrowth of the first practical semiconductor light emitters invented in the early 1960s and optical fibers developed in the 1970s.
Usage examples of "photonics".
Obroa-skai, the Museum of Applied Photonics rose above the surrounding bugyards in a glittering massif of transparisteel towers and crystalplas galleries.
The photonics, calculated to intercept him only if he fled, exploded harmlessly behind him.