Fiber connections provide users with very fast, reliable internet. But, only 43% of U.S. households have access to a fiber internet connection. CNBC visited Corning, the world’s largest manufacturer of optical fiber and North America’s largest producer of fiber optic cables to understand the technology behind fiber-optic internet and how the market for fiber products is changing. https://cnb.cx/3A9KcSm | CNBC

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