光ひかり通つう信しん技ぎ術じゅつ

Meanings

1

noun

optical communication technology; photonic technology

Technical term referring to technology that uses light (often fiber optics) for communication.

skill, art, craft

術art, technique, skill

光ひかりファイバー
Refers specifically to the optical fiber medium, while 光通信技術 is the broader technology field.
光ひかり通つう信しん
Means 'optical communication' in general; 光通信技術 emphasizes the technological aspect.

Compound of 光 (ひかり, 'light'), 通信 (つうしん, 'communication'), and 技術 (ぎじゅつ, 'technology').