Method for compensating modal dispersion in multimode optical fiber transmission path

A multi-mode fiber, modal dispersion technology, applied in the direction of optical waveguide light guide, etc., can solve the problems of complex calculation, difficulty, long time and so on
CN1745322AInactive Publication Date: 2006-03-08THE FUJIKURA CABLE WORKS LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
THE FUJIKURA CABLE WORKS LTD
Publication Date
2006-03-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

In an optical transmission line consisting of a multimode optical fiber, the mode dispersion of the optical transmission line is reduced in order to permit a wide-band optical signal to be transmitted at high speed, over a long distance and at low costs. When a plurality of multimode optical fibers are connected together to form a transmission line for the purpose of reducing a mode dispersion, length ratios between the respective multimode optical fibers that can maximize the band of this optical transmission are determined, and they are connected together at the length ratios. In addition, a multimode optical fiber having a specific refractive index profile is used as a mode dispersion compensating fiber. Also, a compensated fiber and a compensating fiber each having a specific length are connected together.
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Description

technical field

[0001] The present invention relates to a method for compensating modal dispersion in an optical transmission line constructed with multimode optical fibers, which can reduce the modal dispersion of the optical transmission line and obtain a wide transmission frequency band. Background technique

[0002] In general, in FA (factory automation) and OA (office automation), etc., in LAN (local area network) that connects computers and related equipment through optical transmission lines, in this optical transmission line, it is widely used to realize the light receiving surface. A multimode optical fiber that can be easily combined with light-emitting and light-receiving devices with a larger diameter.

[0003] In this multimode optical fiber, a graded-index optical fiber (hereinafter referred to as GI optical fiber) is an optical fiber in which the refractive index distribution of the core is formed such that the refractive index gradually decreases as the radiu...

Claims

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