1. Optical Fibers :
- Optical fibers use light waves for transmission.
- These cables are well-suited for voice, data, and video transmissions.
- Optical fibers are the most secure of all the cable media.
- installation and maintenance are difficult and costly.
- Fiber optic cables have greater transmission speed, high bandwidth, and the signal can travel longer distances when compared to coaxial and twisted pair cables.
-Advantages :
- Zero interference
- Covers major cities & countries
- High speed
- High bandwidth
- Highly secure
- -Disadvantages :
- Installation & maintenance is difficult
- Cabling is costly
- Retrofitting an existing network is difficult
- Optical fibers are incompatible with many types of electronic networking equipment
-Modes of operation :
--Single mode :
Single beam of light
- Communication over large distances
- Better transfer speed
--Multimode :
Multiple light beams
- Reduced length and travel speed
- Larger bandwidth
- Signal strength is weakened
2. Wireless/Unguided Media Transmission :
1. The features of wireless/unguided transmission media are that the signal gets broadcast without any guided medium through the air and is less secure. There are three types of wireless transmission media:
- Radio wave
- Infrared
- Microwave
2. The advantages of unguided transmission media include the following:
They are useful in wireless remote accessing methods.
- Networks can be expanded without disturbing the current users.
3. The disadvantages include:
Potential security issues.
- They have limited speed compared to guided transmission media.