1An optical fiber: a thin glass or plastic strand that transmits information using light, used for high-speed communication.
我が家は光ファイバー回線に切り替えてインターネットが速くなった。
We switched our home to a fiber-optic connection and the internet became faster.
工事で光ファイバが街中に敷設された。
Fiber-optic cables were installed throughout the town during construction.
光ファイバーは電線に比べてノイズに強く、長距離伝送に向く。
Optical fiber is more resistant to noise than electrical wires and is suitable for long-distance transmission.