fibre optics
noun [ plural ] UK (US fiber optics) uk/ˌfaɪ.bər ˈɒp.tɪks/ us/ˌfaɪ.bɚ ˈɑːp.tɪks/
光导纤维；光纤
the use of very thin glass or plastic threads through which light can travel to carry information, especially in phone, television, and computer systems