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In page History of the Internet:

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Gould co-founded Optelecom in 1973 to commercialize his inventions in optical fiber telecommunications,[5] just as Corning Glass was producing the first commercial fiber optic cable in small quantities. Optelecom configured its own fiber lasers and optical amplifiers into the first commercial optical communication systems which it delivered to Chevron and the US Army Missile Defense.[6] Three years later, GTE deployed the first optical telephone system in 1977 in Long Beach, California.[7] By the early 1980s, optical networks powered by lasers, LED and optical amplifier equipment supplied by Bell Labs, NTT and Perelli were used by select universities and long-distance telephone providers.[citation needed]