Optical Fiber

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At Corning, innovation never stops. We changed communications when we invented low-loss optical fiber.

Seamlessly Connect to the World

Optical Fiber Products

Optical Fiber 101

Optical Fiber 101

Optical fiber is a highly-transparent strand of glass that transmits light signals with low attenuation (loss of signal power) over long distances, providing nearly limitless bandwidth. This technology enables telecommunications service providers to send voice, data, and video at ever increasing rates.

Corning is committed to providing education and technical support to ensure the basics of optical fiber, its composition, and its capabilities are understood.

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Fiber Basics

Fiber 101

The Essential Details

Critical Yet Transparent Solutions.

An optical fiber is comprised of three basic parts: (1) the core is the inner glass that carries information in the form of light signals (2) the cladding glass surrounds the core and ensures the light pulses remain within the core and (3) an outer coating protects the fiber during processing, installation, and handling.

Our scientists explain how the composition of optical fiber enables it to carry data.

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The Modes of Light

How It Works

Brilliant Clarity over Distance.

Known for innovative design and practical applications, we have developed an array of single-mode fiber and multimode fiber products for all of today's applications. Single-mode fiber has a smaller core, allowing only one mode of light to move through it at a time. This streamlined design is used primarily in telephony applications, where the fiber needs high signal clarity over long distances. Multimode fiber has a larger core, allowing hundreds of modes to move through the fiber simultaneously. Multimode fiber is used primarily for data communications in enterprise networks, like campuses or buildings where transmission distances are two kilometers or less.

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Fiber Myths

The Truth About Glass

Remarkably Strong, Enduringly Flexible

Whether we’re filling a glass of water or washing our windshield, we take glass for granted as a functional yet fragile part of our everyday lives. Our assumptions about its properties have been shaped by a mix of life-long warnings (be careful with that, it’s glass!) and direct experience (my baseball broke the window!).

What are the myths – and the facts – behind optical fiber?

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Lesson in a Box

Educational Tools for Teachers and Students

Educating Tomorrow’s Scientists

We realize tomorrow’s dreamers and innovators are critical to success. Corning is honored to equip teachers and students with these educational tools, sharing our knowledge about optical fiber, its composition and its capabilities.

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Customer Service

Corning Commits to Outstanding Service, Before, During and After Delivery

Corning Commits to Outstanding Service

Our objective is to make every customer relationship a completely positive experience thanks to:

  • Technical and field support
  • Customer-specific experts
  • A team prepared to answer questions about network design or system modeling
  • Education via our website
How to Order
Corning offers three convenient ways to order Corning® optical fiber:
  • Contact your sales representative
  • Call the Optical Fiber Customer Service Department at +1 607-248-2000
  • Email the Optical Fiber Customer Service Department at cofic@corning.com
Corning Optical Fiber Information Center
The Corning Optical Fiber Information Center (COFIC) is the most extensive fiber-optic information resource in the world. With just a phone call or an email, you can be in touch with a team of trained information specialists and technical experts that are ready to answer your questions and provide you with the information you need. They have an array of resources at their fingertips including product brochures, samples, product specification sheets, case histories, application notes, white papers, technical article reprints, training materials, measurement methods, and much more.
If you currently deploy optical fiber, are considering it for the future, or simply need information on fiber technology, contact COFIC at (607) 248-2000 or by email at cofic@corning.com. Our representatives in North America are available by phone between 8:00 a.m. and 5:00 p.m. (EST), Monday through Friday.