光通信 ひかりつうしん Meanings Noun light-wave communication Kanji 光 light. Read as ひかり. 通 pass through. Read as ツウ. 信 trust. Read as シン. Words containing 光通信 光通信技術 (ひかりつうしんぎじゅつ) photonic technology Jinuma: Japanese Dictionary · Word lists