The light-conducting center of an optical fiber, defined by the region of high refractive index.

The core is the part of the Fiber that carries the Light signal that has information impressed upon it. The fiber optic core is made of very pure Glass and its diameter is measured in microns. 1. The central region about the longitudinal AXIS of an optical fiber, which region supports guiding of the optical signal. Note 1: For the fiber to guide the optical signal, the Refractive Index of the core must be slightly higher than that of the cladding. Note 2: In different types of fibers, the core and core-cladding boundary function slightly differently in guiding the signal. Especially in single-mode fibers, a significant fraction of the Energy in the Bound Mode travels in the cladding. 2. A piece of ferromagnetic material, usually toroidal in shape, used as a component in a computer memory device. Note: The type of memory referred to has very limited application in today's computer environment. It has been largely replaced by Semiconductor and other technologies. 3. The material at the center of an electromechanical relay or solenoid, about which the coil is wound.

Related Terms
Core Area,   Core Diameter,   Core Eccentricity,   Core Ellipticity,   Core Less End Caps,   Fiber Core,   Large Core Fiber,  

External links for Core
Core on Wikipedia
Core on Google
Core on Yahoo!
Core on Answers
Core on The Free Dictionary

The Timbercon Fiber Optic Glossary continues to expand and improve. If you have suggestions for improvement, we would enjoy hearing from you. Please contact the webmaster here.

Home : Fiber Optic Education » Fiber Optic Glossary » Core