Corning Clear Curve Video - How was it made?

Hi everyone,

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I have been thinking about this a lot and since I'm getting into the fiber area and i discovered this video from Corning I wanted to know if any of you have any idea of how they made this "small network", with which intermidiattes, technology, etc..

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https://www.youtube.com/watch?v=UBt00CVvMBA&t=1s

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I would really appreciate the help because I want to do a test like this!

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Best Regards