optoelectronics

noun (used with a singular verb)

1. the branch of electronics dealing with devices that generate, transform, transmit, or sense optical, infrared, or ultraviolet radiation, as cathode-ray tubes, electroluminescent and liquid crystal displays, lasers, and solar cells.

noun

1. (functioning as singular) the study or use of devices in which an optical input produces an electrical output, or in which electrical stimulation produces visible or infrared output