光缆

• 拼音: guāng lǎn
• 汉字拆解: 光 = 火 + 人 (light); 缆 = 纟+ 览 (thread + overlook — a thick rope of many strands)

含义

Fibre-optic cable. A bundle of optical fibres enclosed in a protective sheath, used to transmit data as pulses of light at high speed.

A key term in telecommunications and infrastructure. Commonly appears in 铺设光缆 (lay fibre-optic cable), 海底光缆 (submarine fibre cable), and 光缆宽带 (fibre broadband). Central to discussions of internet infrastructure, rural connectivity, and 5G rollout in China.

例句

1. 政府大力推进农村光缆宽带建设，努力缩小城乡数字鸿沟。
2. 一艘货轮在港口附近意外拖断了一条重要的海底光缆，导致区域通信中断。
3. 光缆的信号传输速度远超传统铜缆，是现代通信网络的重要基础。

用法指南

语境: technology, telecommunications, infrastructure

语气: neutral

正确说法

• 铺设跨洋海底光缆是连接各大洲互联网络的核心基础设施工程。(Laying trans-oceanic submarine fibre cables is a core infrastructure project for connecting the internet networks of all continents.)
• 随着光缆入户工程的推进，越来越多的家庭用上了千兆宽带。(With the advancement of fibre-to-the-home projects, more and more households are gaining access to gigabit broadband.)

错误说法

• 用光缆打电话 — technically possible but awkward phrasing; use 通过光纤网络拨打 or simply 用宽带打网络电话; 光缆 refers to the physical infrastructure cable, not a service or medium for making calls

起源与历史

光 (light) + 缆 (cable, rope). A cable that transmits light — the optical fibre technology named for its medium of transmission.

文化背景

时代: Modern China

世代: All ages

社会背景: Universal