Adams, M.J., Payne, D.N. and Sladen, F.M.E.
Splicing tolerances in graded-index fibres
Applied Physics Letters, 28, (9), . (doi:10.1063/1.88842).
Calculations are presented showing that, in general, a parabolic-index fiber is more sensitive to lateral misalignments within a splice than a step-index fiber. However, misalignments result in the excitation of leaky modes in graded-index fibers, and this can lead to optimistic joint loss measurements. Effective losses are given for various lengths of fiber following the splice, and it is shown that a parabolic-index fiber may appear more tolerant to misalignment than a step-index fiber when short lengths are used.
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