What type of signal transmission does fiber-optic technology primarily utilize?

• A. Electrical signals
• B. Electromagnetic signals
• C. Light signals
• D. Audio signals

Answer: (C)

Fiber-optic technology primarily utilizes light signals for transmitting data. This method leverages the principles of total internal reflection to send light pulses through thin strands of glass or plastic fibers. Because light can carry vast amounts of data over long distances with minimal loss and interference, optical fibers provide significant advantages over traditional metal wire transmission, which is limited to electrical signals. The use of light in these systems allows for high bandwidth and high-speed communications that are essential for modern networks, making fiber optics a preferred choice in telecommunications, internet infrastructure, and data centers.