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Manufacturing Advantage


COF_mfg.jpgCorning's expertise in materials, manufacturing, and process engineering is legendary. Our researchers relied on this expertise when we invented the first commercially viable low-loss optical fiber in 1970, and it has given us an advantage over our competition ever since.

In fact, Corning is unsurpassed in fiber optic manufacturing experience. We produce all the glass materials for our fiber from raw materials in our clean-room facilities, and our outside vapor deposition technology is patented. We are relentless in ensuring our manufacturing process delivers the quality, efficiency, precision, and product consistency our customers require.

An optical fiber is comprised of three basic parts: (1) the core is the inner glass of the fiber that carries information in the form of light signals; (2) the cladding glass surrounds the core and prevents signal loss; and (3) an outer coating is then applied over the cladding, to protect the glass from physical damage. Watch an illustrated comparison of single-mode and multimode composition. View 

The fiber making process begins by creating "preforms" of core and cladding glass on proprietary vapor deposition lathes, with chemistry controlled so precisely that contaminant levels are measured in parts per billion. These preforms are sintered into a solid, dense, transparent glass and subsequently drawn into a coated optical fiber the diameter of a human hair, with dimensional precision at the one-micron level. Additional manufacturing steps test the fiber for strength at 100,000 pounds per square inch and fully measure its optical performance before shipment to customers.

Corning's manufacturing process is highly controlled with quality architecture built in at every stage. The resulting advantages we gain enable us to make the best performing optical fiber in the world.

Explore the videos below for more information on Corning’s Manufacturing Advantage.

  • Watch this overview on how Corning makes its industry-leading, high quality, and innovative optical fiber. View
  • Learn about Corning’s optical fiber manufacturing process. View 
  • Learn the basics about optical fiber. View