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Lesson 4: Fiber Optic Datalinks

How do fiber optic communications links work?

Objectives: From this lesson you should learn:
How fiber optic data links and transmission systems work
What components are used in transceivers
Types of sources and detectors used in transceivers
Performance parameters of fiber optic transmission systems

If you already have a CFOT, this is a review of material you have already covered.

Fiber optic transmission systems use data links that consists of a transmitter on one end of a fiber and a receiver on the other end. Most systems operate by transmitting in one direction on one fiber and in the reverse direction on another fiber for full duplex operation. A FTTH passive optical network (PON) is one of the few systems using bidirectional transmission over a single fiber because its network architecture is based around couplers already. Datalinks can be analog or digital, depending on the information being transmitted. In this lesson you will learn how fiber transmits data.

Student Assignment:
Watch the videos, read the references and take the quizzes (Test Your Comprehension)

FOA YouTube Videos
FOA Lecture 27, Fiber Optic Datalinks 
FOA Lecture 31, Wavelength Division Multiplexing  
FOA Lecture 32, Fiber Amplifiers  

Online FOA Reference:

Book Chapter:
            FOA Reference Guide to Fiber Optics, Chapter 4

Test Your Knowledge:
Online Quiz
Take the Quiz at the end of Chapter 4 and check your answers

Extra Credit Reading

More on fiber optic transceivers and their components  
Wavelength bands used in OSP fiber optic links  
Standards for fiber optic networks  

Next: Lesson 5: Optical Fiber    
Return to Lesson Plan


Table of Contents: The FOA Reference Guide To Fiber Optics

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