Multi-mode fiber is a type of optical fiber designed to carry multiple light signals simultaneously. It has a larger core diameter compared to single-mode fiber, allowing multiple light paths or modes to travel through it. This makes it suitable for short-distance communication, such as within buildings or campuses. The primary advantage of multi-mode fiber is its ability to transmit data at high speeds over shorter distances, typically up to 2 kilometers. It is commonly used in local area networks (LANs) and data centers, where high bandwidth and quick data transfer are essential for efficient operations.