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Understand technology.
Then try it yourself.

Understand optical loss and the interpretation of test traces.
Apply the concepts in educational simulations, then check your understanding.

Interactive lab

Put knowledge into practice.

Simplified educational tools.
No connection to real devices; not a substitute for field measurements.

Configure your optical link

Defaults are editable training assumptions. Use component specifications for a real project calculation.

Calculation method — FOA
Estimated total loss4.50dB
Fiber
3.50 dB
Connectors
0.60 dB
Splices
0.40 dB

Loss = (length × attenuation) + connector loss + splice loss.

Splitters and design margin are not included. This is not a network pass/fail assessment.
Learn in clear steps

From fundamentals to skills.

Read the concept, try it in the lab,
then check your understanding.

Total loss combines fiber, connectors and splices. Multiply length by attenuation, then add the loss of each connector pair and splice. Values depend on fiber type, wavelength and component specifications.

Try it: Keep other values fixed and increase link length in the calculator. Fiber loss rises while connector loss stays unchanged.

Check your understanding

If fiber length increases and everything else stays fixed, what happens?