Final answer:
MMF stands for Multimode Fiber, which is a type of optical fiber used for short-distance communication and can propagate multiple light paths within its core.
Step-by-step explanation:
MMF stands for Multimode Fiber, which is a type of optical fiber commonly used for communication over short distances such as within a campus or a building. The term "multimode" refers to the fact that these fibers can propagate multiple modes, or light paths, within the core of the fiber. This is different from single-mode fiber (SMF) that supports only one mode, typically used for long-distance communication. MMF has a larger core diameter compared to SMF, usually measuring around 50 to 62.5 micrometers. The larger core size makes it easier to couple light into the fiber but can also result in modal dispersion, leading to lower bandwidth over longer distances.