Fiber optic cables yog cov kab sib kis uas siv lub teeb ua tus neeg xyuas pib, khav theeb qhov zoo xws li kev kub ceev (txog qhov nrawm ntawm lub teeb), bandwidth loj (txhawb TB- qib cov ntaub ntawv kis tau tus mob), thiab muaj zog tiv thaiv - cuam tshuam (tsis cuam tshuam los ntawm electromagnetic teb). Lawv lub luag haujlwm tseem ceeb suav nrog: 1. High-kev sib txuas lus ceev (latency<1ms), suitable for real-time scenarios such as financial transactions and telemedicine; 2. Big data processing (single fiber capacity up to 100Tbps), supporting cloud computing and edge computing needs; 3. Long-distance transmission (80-100km without repeaters), ensuring high-quality cross-border communication. In home scenarios, Fiber to the Home (FTTH) technology can provide gigabit-level bandwidth (1Gbps+), perfectly supporting high-bandwidth applications such as 4K/8K video and cloud gaming. In the future, with the development of 5G and the Internet of Things, ultra-low-loss fiber (attenuation ≤0.15dB/km) will become the data artery for smart cities and autonomous driving.