3.1 Cables & Adap: Fiber Network Cables

Question 1

Optical fiber communication

Answer 1

Transmission through cables using light instead of radio frequencies

No RF signal
- difficult to monitor or tap

Light sign slow to degrade

• can transmit over longer distances
• can connect device far apart that we couldn’t with copper

Immune to radio or electrical interference
- no RF

Question 2

Fiber physical makeup

Answer 2

Thin fiber core

Thick ferrule cladding for protection

Question 3

Multi mode fiber (finer cable type)

Answer 3

When light goes into finer core, it will bounce around into different modes.

Short- range communication best

• 2 kilometers for 100 Mbit/s
• 550 meters for 10 gbit/s

Inexpensive light source
- LED

Question 4

Single mode Fiber

Answer 4

Light Moves straight in one direct path instead of bouncing around. Comes out in a single mode

Good for Long range communication
- over 80 km without addition processing

Expensive light source
- laser beams