| 摘要 |
Multimode optical fibers are described comprising a cylindrical core with a radius ao exhibiting an index of refraction no surrounded by a cladding having an outer radius a in which the index of refraction varies continually from the core to the periphery from a value of n1 to a lower value ne. Between the core and cladding there is a step change DELTA n in their respective indices of refraction whose value is a function of the ratio ao/a. Such fibers have both slight attenuation and slight dispersion and can be manufactured using processes similar to those used in making step-index optical fibers.
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