photonics; optical engineering
Technical field encompassing the study and application of light, including lasers, fiber optics, and optical devices. Often used interchangeably with フォトニクス.
See also: フォトニクス
He is majoring in optical engineering at university.
Advances in photonics have enabled high-speed communication.
Compound of 光 (ひかり, 'light') and 工学 (こうがく, 'engineering').