Answers are grounded in this paper and cite their sources.
We consider the modes of a weakly coupled equilateral triangular array of three fibre cores. In particular, we concentrate on what symmetry tells us about the field, propagation constant degeneracies and thus their beating.
No takes yet. Share an insight, caveat, or question.
Black et al. (1986) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: