| 摘要 |
It is shown that minimum delay distortion is realized in a graded-index multimode optical fiber comprising an inner core of radius a surrounded by a suitable cladding when the refractive index n(r), at any radius r less than a, is given by n(r) = no [1 - 2 DELTA (r/a)2<->2 ] 1/2, WHERE NO IS THE REFRACTIVE INDEX AT THE CENTER OF THE FIBER CORE, A IS THE CORE RADIUS, NC IS THE REFRACTIVE INDEX OF THE CORE AT R = A, AND DELTA = NO = NC/NO. A variety of suitable claddings are described.
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