Thanks to the focused signal of singlemode fiber cables, they can deliver an optical signal over multiple miles without the need to repeat or amplify it. This design minimizes signal loss and enables data to be transmitted over longer distances with superior performance, making single mode fiber ideal for backbone. Fiber optic cables use light to transmit data, while traditional cables, such as copper cables, use electrical signals. In fiber optic cables, data is transmitted as pulses of light that travel along a thin strand of glass or plastic fiber.