Which of the following is a common application for single-mode fiber?

Single-mode fiber is commonly used in telecommunication networks due to its ability to transmit data over long distances with minimal signal loss and high bandwidth capacity. This type of fiber has a small core diameter, allowing only one mode of light to propagate, which results in less dispersion and higher performance over long distances compared to multi-mode fiber. It's ideal for applications that require high-speed and long-distance data transmission, such as those found in telecommunications, where data needs to travel across cities or between different countries.

Other applications like short-range data communications, consumer electronics, and LAN connections typically rely on multi-mode fiber or copper cabling, which are better suited for these environments. In contrast, single-mode fiber excels in scenarios demanding long-distance communication, making it the standard for telecommunications.