WHY FIBER OPTICS?
ELECTROMAGNETIC INTERFERENCE IMMUNITY
- Cables interconnecting equipment can be one of the main sources of EMI and can also be one of the main receiving antennas carrying EMI into equipment.
- Optical fibers do not radiate or pick up electromagnetic radiation. Copper wires both radiate and pick up electromagnetic radiation. Digital transmission requires that signals be transmitted error free. A burst of EMI (elctromagnetic interference) may appear as a pulse, where no pulse occured in the original pulse stream.
The Network Wiring Virtual Lecture by L. Scott Freudenthal