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Propagation characteristics of multimode fibers with graded core index

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1 Author(s)
M. Ikeda ; Nippon Telegraph and Telephone Public Corporation, Tokyo, Japan

Bending loss and impulse response of multimode fibers with graded-index core have been studied. A multimode fiber which has a large index difference is profitable because of low loss in bends. Impulse response of the fiber in which all of the possible modes are excited with the same intensity depends remarkably on the fourth-order term of the index profile. A small value of mode delay of 0.15 ns/km is estimated to be obtainable in a fiber having an optimum index profile and index difference ratio of 0.05 using incoherent light.

Published in:

IEEE Journal of Quantum Electronics  (Volume:10 ,  Issue: 3 )