Charles K. Kao

Hello! My name is Charles Kao. I want to tell you my story. I was born in a big, busy city called Shanghai on November 4th, 1933. Even when I was a little boy, I was curious about everything. I wanted to know how things worked. I loved doing science experiments with my brother. We had so much fun figuring out how to make things pop and fizz!

When I grew up, I moved to England and became a scientist. In those days, people sent messages to each other through thick, heavy copper wires. It was very slow, like sending a letter that had to travel a long way. I thought, "There must be a better way!" In 1966, I had a big, bright idea. What if we could send messages using light? I imagined sending information as fast as a blink of an eye through tiny threads of super-clean glass. My friend George Hockham and I worked together and wrote down our idea to show everyone how these special glass threads, called "optical fibers," could change the world.

At first, some people did not believe my idea was possible. They said the glass couldn't be made clean enough for light to travel through. But I knew that if we could make the glass very, very pure, it would work perfectly. I didn't give up. Soon, other scientists got excited and started helping us. Together, we created the first real fiber optic cables! This invention changed everything. Because of our work, you can now send emails, watch videos, and talk to family on the other side of the world almost instantly. It’s all thanks to tiny beams of light zipping through glass threads buried under the ground and across the sea.

Later in my life, in 2009, I was given a very special award for my idea, called the Nobel Prize. It was a wonderful honor. I lived to be 84 years old, and it made me so happy to see how my dream of sending messages with light connected the whole world. So next time you use the internet to watch a cartoon or talk to a friend, remember the story of how we learned to send messages with a flash of light.