This document discusses different types of wired transmission media, including twisted-pair cable, coaxial cable, and fiber-optic cable. It describes their basic components and properties, such as maximum data transfer rates and distances. Twisted-pair cable comes in shielded and unshielded varieties. Coaxial cable uses a central conductor surrounded by insulation and shielding. Fiber-optic cable transmits data using pulses of light through glass cores. Each type has advantages like speed and disadvantages like cost.

1. WIRED TRANSMISSION MEDIA
PRESENTED BY
Md. Tutul Haque
Roll: 160129
Department of Computer Science & Engineering
Jashore University of Science & Technology

2. OBJECTIVES
 Transmission Media
 Wired Transmission Media
 Twisted-Pair Cable
 Coaxial Cable
 Fiber-optic Cable
 Advantage and Disadvantage

3. TRANSMISSION MEDIA
 Transmission media is a pathway that carries the
information from sender to receiver.
 Transmission media are actually located below
the physical layer and directly controlled by the
physical layer.
Fig: Transmission medium and Physical layer

4. CLASSES OF TRANSMISSION MEDIA

5. GUIDED MEDIA
Guided media which are those that provide a conduit from one device to another,
include
 Twisted-pair cable
 Coaxial cable
 Fiber-optic cable

6. TWISTED-PAIR CABLE
A twisted pair cable consists of two conductor (normally copper), each with its own
plastic insulation, twisted together.
 Frequency range 5 MHz
 Bandwidth 10 Mbps to 1 Gbps
Fig: Twisted-pair cable

7. TWISTED-PAIR CABLE CLASSIFICATION
Twisted-pair Cable
UTP(Unshielded Twisted-pair) STP(Shielded Twisted-pair)

8. UTP-UNSHIELDED TWISTED PAIR CABLE
 Unshielded twisted-pair is a cable with
wires that are twisted together.
 Data transfer rate 10 Mbps to 1 Gbps.
 Data transfer range 100m.
 UTP cabling is used extensively for local-
area networks (LANs) and telephone
connections.
Fig: UTP Cable

9. STP-SHIELDED TWISTED–PAIR CABLE
Fig: STP cable
 Shielded twisted pair is a twisted pair cable
enclosed in foil or mesh shield which blocks
out electromagnetic interference.
 Data transfer rate 16 Mbps to 500 Mbps.
 Moderately expensive.

10. COAXIAL CABLE
 Coaxial cable, or coax, is a type of electrical
cable that has an inner conductor surrounded
by a tubular insulating layer, surrounded by a
tubular conducting shield.
 Many coaxial cables also have an insulating
outer sheath or jacket.
 Data transfer rate 200 Mbps.
 Data transfer range 1km.
Fig: Coaxial Cable

11. Advantages
 High transmission rate.
 Low noise.
 Easy to setup and install.
 Use high TV network.
 Cheaper than fiber-optic cable.
 Frequency 500 MHz.
Disadvantages
 More Expensive than twisted-pair
cable.
 Without repeater data can not send
more than 1km.
COAXIAL CABLE

12. FIBER-OPTIC CABLE
 Fiber-optic cable is a cable consisting of one
or more thin flexible fibers with a glass core
through which light signals can be sent with
very little loss of strength.
 Difficult to join.
 Low loss of energy.
 Speed of its equal to speed of light
Fig: Fiber-optic cable

13. OPTICAL-FIBER COMMUNICATION SYSTEM
Fiber-optic communication is a method of transmitting information from one place to
another by sending pulses of light through an optical fiber. The light forms an
electromagnetic carrier wave that is modulated to carry information
Fig: Optical fiber

14. BENDING OF LIGHT RAY

15. FIBER-OPTIC CABLE
 Advantages
 High bandwidth.
 Faster data transmission.
 Smaller physical size.
 Low transmission loss.
 Potential low cost.
 Free from electromagnetic force.
 Disadvantages
 More Expensive than twisted-pair
and coaxial cable.
 Can be difficult to modify and
install.

16. SUMMARY
 Transmission Media
 Wired Transmission Media
 Twisted-Pair Cable
 Coaxial Cable
 Fiber-optic Cable
 Advantage and Disadvantage

17. THANK YOU

18. ANY QUESTIONS?

19. REFERENCES
 Book: Data Communication and networking by Behrouz_A_Forouzan, 4th edition
 https://en.wikipedia.org/wiki/Data_transmission