Fiber U Free Self Study Programs

 The Mysterious dB Of Fiber Optics MiniCourse

dB measurement meter

MiniCourse: The Mysterious dB of Fiber Optics
Level: Intermediate

Fiber Optic dB Measurements MiniCourse

Fiber U MiniCourses are courses on a specific topic that you can take in about an hour or less. They are based on questions people ask FOA all the time, so the topics are recommended by our readers.

Level: Intermediate

Intended For:
Designers of fiber optic communications networks
Users of fiber optic communications networks
Contractors and techs who install, test, operate and maintain them.

Objectives: From this self-study program you should learn:
How dB is defined
How measurements of optical power are converted to dB
How gain and loss are measured in dB
How calibrated power measurements are expressed in dBm
Why some instruments read dB differently

You will need a basic understanding of fiber optics, e.g. training and a FOA CFOT certification or at least a familiarity with fiber optic technology.
For an quick, simple overview of fiber optics, you can use one of these three options: 1) the Fiber U self-study program Fiber Optics in Communications and How It Works, 2) the FOA YouTube Videos Fiber Optics and Communications and How To "Talk" Fiber Optics or 3) Lennie Lightwave's Guide To Fiber Optics  

For more comprehensive preparation, see the Fiber U Basic Fiber Optics self-study program or the printed FOA textbook FOA Reference Guide To Fiber Optics.

Fiber U Certificate of Completion
When you finish, you can take an online test on this course to qualify for a "Fiber U Certificate of Completion." The test cost for a Fiber U MiniCourse is $10US.

Fiber optic measurements of power and loss are made in dB, a mysterious unit of measurement that confuses many people. This course explains what dB and dBm are, how they are defined and measured. The course will also explain how small change in a standard created confusion and misunderstanding of dB. Even if you aren't a math whiz, this FOA course can help you understand dB.

For this lesson plan you will be instructed to watch the video, read the reference and take a quiz (Test Your Knowledge) to complete the course.

Lesson Plans
Watch the video first, read the section in the FOA Guide on dB and take the quiz. For this course, we recommend watching the video first and then readindBg the FOA Guide page on . There is a short quiz you can use to check your comprehension. The Certificate of Completion test is based on those materials.


The Mysterious dB of Fiber Optics

FOA Guide
Fiber Optic Measurement Units: dB and dBm

Test Your Comprehension
Fiber Optic dB Measurements Quiz

Fiber U Certificate of  Completion
When you finish all the assignments you can take an online test on this course to qualify for a "Fiber U Certificate of Completion." The test cost is $10US.

Go here to take the Fiber U dB Minicourse -" Certificate of Completion test. Here are detail directions if this is your first time taking a
Fiber U Certificate of Completion exam.

This information is provided by The Fiber Optic Association, Inc. as a benefit to those interested in teaching, designing, manufacturing, selling, installing or using fiber optic communications systems or networks. It is intended to be used as an overview and/or basic guidelines and in no way should be considered to be complete or comprehensive. These guidelines are strictly the opinion of the FOA and the reader is expected to use them as a basis for learning, as a reference and for creating their own documentation, project specifications, etc. Those working with fiber optics in the classroom, laboratory or field should follow all safety rules carefully. The FOA assumes no liability for the use of any of this material.


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