Final answer:
Single-mode fiber optic cable uses a single beam of light to transmit data over longer distances with low loss, high bandwidth, and reduced crosstalk compared to multimode fiber.
Step-by-step explanation:
The subject of this question is single-mode fiber optic cable, which uses a single beam of light to transmit data over greater distances than multimode fiber optic cable. Single-mode fiber has a smaller core diameter which allows only one mode of light to propagate. This design reduces the amount of light reflection created as the light passes through the core, minimizing loss and allowing the signal to travel further without needing amplification. This is why single-mode fibers have low loss and are well-suited for long-distance telecommunications. Single-mode fibers are capable of carrying a substantial amount of data due to their high bandwidth; they also feature reduced crosstalk, where signals in one fiber have minimal interference with those in adjacent fibers.