1. Introducing multimode optical fibers

Optical fibers used in telecommunications are generally made of dielectric materials (in this article, glass or plastic) whose function is to confine and guide visible or infrared light over long distances. These optical fibers are made up of two concentric tubes of dielectric material, each with a different dielectric permittivity (and therefore a different refractive index). Under certain conditions, light is guided along the axis of revolution of the optical fiber into the material with the higher refractive index – in most cases, within the core of the fiber.

1.1 Definition of physical parameters

Two types of optical fiber with very distinct applications can be defined according to their core diameter. We differentiate between single-mode and multimode optical...

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Introducing multimode optical fibers

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Applications in high-speed digital networks

Bibliography

(1) - MILLER (S.E.), CHYNOWETH (A.C.) - Optical Fiber Telecommunications, - Academic press Inc., (1979).
(2) - LETHIEN (C.), LOYEZ (C.), VILCOT (J.-P.) and GOFFIN (A.) - Differential Mode Delay measurements of the fluorinated based Graded Index Polymer Optical...

Standards and norms

Optical fibres – Part 2-10: Product specifications – Sectional specification for category A1 multimode fibres; NF EN (April 2008) - IEC 60793-2-10 - 6-2007
ISO 11801 – Information technology – Generic cabling for customer premises - ISO 11801 - 9-2002
Product specifications – Sectional specification for category A4 multimode fibres, 2nd edition ; NF EN (april 2008) http://webstore.iec.ch/webstore/webstore.nsf/artnum/035855...