Abstract

Marcuse¹ has shown that the fields of monomode fibers near cutoff are approximately Gaussian, and hence that splice loss can be calculated by evaluating the coupling between misaligned Gaussian beams. Based on this analysis, Nemoto and Makimoto² derived a general equation for splice loss between nonidentical monomode fibers with combined transverse x, longitudinal z, and angular θ misalignments.² This equation is in a particularly useful form, since the splice loss depends only on the spot size (SS) of each fiber rather than the details of the refractive-index profile.

© 1982 Optical Society of America