Splice-loss evaluation for single-mode graded-index fibers

In this paper we present highly accurate and simple methods for the evaluation of splice loss in single-mode graded-index fibers. These are based on accurate approximations of the modal field of such fibers which we have recently developed. Splice losses for angular and transverse offsets have been expressed in analytical forms which are quite easy to evaluate. A comparison of our results with those obtained using the Gaussian approximation is also presented which shows that our method is much more accurate than the latter.