Five ways optical fiber has changed the world.

The development of optical fiber has been a key enabler for technology, from the planet’s largest and most complex machine to the latest quantum encryption. Connecting the elements of the internet together safely and reliably is a major challenge that engineers have been addressing over the last thirty years. All this comes from a quirk of nature, where total internal reflection allows a beam of light to travel hundreds of kilometres down a glass fiber or shorter distance down a plastic version. Here are five of the ways optical fiber has changed the world as we know it.

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