Abstract
An efficient model for evaluating the splice losses between two identical arbitrarily graded-index single-mode fibers caused by transverse and angular misalignments is presented. The power transmission coefficients at the splice are expressed as a weighted sum of simple Laguerre-Gaussian functions, the weight factors being computed by solving a linear matrix eigenvalue problem. An outline of the theory is presented and applied to refractive-index profiles of practical interest. The results of the model are compared with the predictions of other exact or approximate models.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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