Multimode interference in circular step-index fibers studied with the mode expansion approach

Hongbo Li, Moysey Brio, Axel Schülzgen, Nasser Peyghambarian, Jerome V. Moloney

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

The mode expansion approach in vectorial form, using a complete set of guided modes of a circular step-index fiber (SIF), is developed and applied to analyze multimode interference in multimode fibers (MMFs) for the first time, to the best of our knowledge. The complete set of guided modes of an SIF is defined based on its modal properties, and a suitable modal orthogonality relation is identified to evaluate the coefficients in a mode expansion. An algorithm, adaptive to incident fields, is then developed to systematically and efficiently perform mode expansion in highly MMFs. The mode expansion approach is successfully applied to investigate the mode-selection properties of coreless fiber segments incorporated in multicore fiber lasers and the self-imaging in MMFs.

Original languageEnglish (US)
Pages (from-to)2707-2720
Number of pages14
JournalJournal of the Optical Society of America B: Optical Physics
Volume24
Issue number10
DOIs
StatePublished - Oct 2007

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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