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General Physics Science Fair Project

How Does Bending an Optic Cable Affect Audio Signals?

Hard
How Does Bending an Optic Cable Affect Audio Signals? | Science Fair Projects | STEM Projects
Ever heard of a fiber optic cable? It's a special type of cable that can transmit audio signals. In this project, we'll explore what happens to the signal when the cable is bent. We'll measure the frequency and amplitude of the signal before and after it's sent through the cable, and see if there's any difference.

Hypothesis

The hypothesis is that the audio signal will lose frequency and amplitude when transmitted through a fiber optic cable with a smaller degree of bend diameter.

Method & Materials

You will set up a fiber optic transmission system and measure the frequency and amplitude of the signal before and after it's sent through the cable. You will wrap the cable around wooden dowels of different diameters and measure the signal loss.
You will need a fiber optic transmission system, a scopemeter, wooden dowels of different diameters, and a signal generator.

Results

The results of the experiment showed that the audio signal only lost amplitude when transmitted through a fiber optic cable with a smaller degree of bend diameter. The highest percentage of loss of amplitude occurred when the signal was transmitted through the cable with a constant amplitude of 5 volts peak to peak.

Why do this project?

This science project is interesting because it explores how the physical shape of a cable can affect the signal that is transmitted through it.

Also Consider

Experiment variations to consider include testing different frequencies and amplitudes, and using different materials for the cable.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

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