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1. Optical Fiber
English Project

2. About us
Abdessalam BENHARIRA Laurent PANEK

3. Summary
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1. What is optical fiber ?
2. How it works ?
3. Different types
4. Uses
5. Advantages and disadvantages
6. Conclusion

4. 1
.What is optical fiber ?
2
Definition
A technology that uses glass (or plastic) threads (fibers)
to transmit data. A fiber optic cable consists of a bundle
of glass threads, each of which is capable
of transmitting messages modulated onto light waves

5. 1
.What is optical fiber ?
John Tyndall
1850’s
Charles Kao & George Hockman
1965
Narinder Singh
Kapany
1952
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6. 1
.What is optical fiber ?
4

7. 2. How it works ?
Fiber optics transmit data in the form of light
particles that pulse through a fiber optic cable
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8. 3. Different types
Multimode type
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9. 3. Different types
Single-mode type
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10. 3. Different types
Comparison between the two modes
• Small core
• Less dispersion
• Carry a single ray of light, usually
generated from a laser.
• Employed for long distance
applications (100Km)
• Uses as Backbone and distances of
several thousands meters.
•Larger core than single mode cable.
•Allows greater dispersion and
therefore, loss of signal.
•Used for shorter distance
application, but shorter than single-
mode (up to 2Km)
•It uses LED source that generates
different angles along cable.
•Often uses in LANs or small
distances such as campus networks.
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11. 4. Uses of optical fiber
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12. 5. Advantages &disadvantages
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Advantages
•Extremely High Bandwidth
•Longer Distance
•Resistance to Electromagnetic Interference
•Low Security Risk
•Small Size
•Light Weight
•Easy to Accommodate Increasing Bandwidth

13. 5. Advantages &disadvantages
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1
Disadvantages
•Fragility
•Difficult to Install
•Cost Is Higher Than Copper Cable
•Special Equipment Is Often Required

14. Conclusion
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Overall, optical fiber, which is nowadays use worldwide, brought
several important improvements to data transmission.
However, its high cost seems to be the only brake to its
deployment.
Moreover, optical fiber is still to its beginning, many
improvements are in R&D (research and developement) proceed.
Our data will be faster than ever.

15. References
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•Techtarget.com
[http://searchtelecom.techtarget.com/definition/optical-fiber]
•Computer HowStuffWorks
[https://computer.howstuffworks.com/fiber-optic4.htm]
•ARC Electronics [https://www.arcelect.com/fibercable.htm]

16. Thank you !