光纤 (guāngxiān): optical fiber

Measure Word

一根光纤 gēn

这栋楼已经铺设了光纤网络。

Zhè dòng lóu yǐjīng pūshè le guāngxiān wǎngluò.

This building has already been fitted with a fiber optic network.

光纤传输速度比铜线快得多。

Guāngxiān chuánshū sùdù bǐ tóngxiàn kuài de duō.

Fiber optic transmission speed is much faster than copper wire.

我家上周接通了光纤宽带。

Wǒjiā shàngzhōu jiētōng le guāngxiān kuāndài.

My home was connected to fiber broadband last week.

memory

光 means light, 纤 means slender/fiber — light travels through a slender fiber.

光 guāng

纤 xiān