Which of the following fiber-optic cable types is used to connect long-distance telephony and cable TV applications?
The fiber-optic cable type commonly used to connect long-distance telephony and cable TV applications is called Single-Mode Fiber (SMF)
The fiber-optic cable type commonly used to connect long-distance telephony and cable TV applications is called Single-Mode Fiber (SMF).
Single-Mode Fiber is designed to carry a single ray of light, known as a mode, which travels directly through the fiber core without bouncing off the edges. This type of cable is used for long-distance transmission because it exhibits low signal loss and has high bandwidth capabilities. It is also capable of supporting high data rates over long distances, making it ideal for telecommunications and cable TV applications that require transmitting signals over vast distances.
Compared to other types of fiber-optic cables, such as Multi-Mode Fiber (MMF), Single-Mode Fiber has a smaller core diameter, typically around 9 microns. This smaller core allows for better transmission of light and minimizes dispersion, which can degrade the signal quality over long distances.
In summary, Single-Mode Fiber is the preferred choice for connecting long-distance telephony and cable TV applications due to its ability to transmit signals over long distances with minimal loss and high data rates.
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