What is a common application for multi-mode fiber?

Multi-mode fiber is designed for short-distance communication needs, making it ideal for applications within buildings or campus environments. This type of fiber utilizes multiple light modes to transmit data, which allows for high data rates over shorter distances typically up to about 300 meters, depending on the specific type of multi-mode fiber used.

In practical scenarios, multi-mode fiber is often employed for local area networks (LANs), data centers, and connections between devices within close proximity. The larger core diameter of multi-mode fiber allows it to manage multiple light rays effectively, facilitating easier coupling with light sources such as LEDs. However, as the distance increases, modal dispersion can limit the effectiveness of multi-mode fiber, hence it is not suitable for long distances.

Conversely, the other applications such as long-distance telecommunication, outdoor fiber networks in rural areas, and undersea data transmission are generally better served by single-mode fiber, which is optimized for long-distance and high-speed transmissions due to its smaller core and ability to transmit signals over greater distances with minimal loss.