Abstract

Low-cost high-fiber-count high-density cables are necessary to construct a practical optical subscriber feeder line. To overcome the limitation of cable diameter and to extend the fiber density, multicore optical fibers are useful in these cables. Various types of high-density fiber have been investigated, for example, multicore fiber and bunch fibers1; optical crosstalk from the signal core to another adjacent core is an important problem. This paper describes the crosstalk characteristics of four-core graded-index multicore fibers, and the dependence of crosstalk under bending and microbending is examined.

© 1987 Optical Society of America

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