Article Overview

Copper wire or satellite communication does NOT belong to fiber optic communication.

Explanation

Fiber optic communication relies on optical fibers made of glass or plastic to transmit information using pulses of light, typically from LEDs or laser diodes . The system includes:

  • Core and cladding: The core carries light signals, while the cladding ensures total internal reflection.
  • Coating and cable jacket: Protect the fiber from physical damage.
  • Receivers: Convert light signals back into electrical signals using photodiodes or indium gallium arsenide semiconductors .
  • Light sources: LEDs for multimode fibers and laser diodes for single-mode or multimode fibers . In contrast, copper wire communication and satellite communication do not use optical fibers or light-based transmission. Copper wires transmit electrical signals, and satellites rely on radio frequency signals, making them outside the scope of fiber optic communication .

Key Takeaway

Any technology or medium that does not involve light transmission through optical fibers—such as copper cabling, coaxial cables, or satellite links—does not belong to fiber optic communication. Fiber optics is specifically defined by its use of light as the carrier wave and glass or plastic fibers as the transmission medium .

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