Final answer:
Multimode optical fiber is commonly used in fiber optics communications, benefiting from low loss, high bandwidth, and reduced crosstalk due to its ability to carry light signals over long distances with minimal loss of signal.
Step-by-step explanation:
Multimode optical fiber is a type of fiber used in fiber optics communication systems, which are commonly employed to carry signals for telephone conversations, internet communications, and cable TV. These optical fibers typically use the principle of total internal reflection to transmit light signals down fibers of plastic or glass. The fibers are made so transparent that they exhibit low loss, allowing light to travel many kilometers before requiring amplification. Additionally, due to their high bandwidth, lasers can emit light that enables more conversations to be carried in one fiber compared to electrical (copper) based systems. Furthermore, these fibers significantly reduce interference between adjacent fibers (reduced crosstalk), enhancing the overall efficiency and reliability of communication.