Which of the following are the two main types of fiber optic cables?

The two main types of fiber optic cables are single-mode and multi-mode. Single-mode fiber optic cables are designed to carry light directly down the fiber without the reflection that occurs in multi-mode fibers, allowing for greater distances and higher bandwidths. This cable type is optimized for long-distance telecommunications, as it minimizes signal loss over long runs.

In contrast, multi-mode fiber optic cables utilize a larger core, allowing multiple modes or light paths to travel simultaneously. This design is suitable for shorter distances and applications within buildings or campuses, where the benefits of increased bandwidth and shorter runs are emphasized.

While the terms SMF (single-mode fiber) and MMF (multi-mode fiber) are abbreviations that technically refer to the same types of cables, they are descriptors rather than distinct categories. Corning and Belden are brands or manufacturers of fiber optic cables, and copper and aluminum are materials used in cabling but do not relate directly to fiber optics. Therefore, the distinction between single-mode and multi-mode cables captures the essential types within the fiber optic classification.