Detailed investigation of mode-field adapters utilizing multimode-interference in graded index fibers

Peter Hofmann, Arash Mafi, Clémence Jollivet, Tobias Tiess, Nasser N Peyghambarian, Axel Schülzgen

Research output: Contribution to journalArticle

36 Scopus citations


We present a detailed study of mode-field adapters (MFA) based on multimode interference in graded index multimode fibers. We have fabricated and characterized MFAs from a selection of commercially available single-mode and graded index fibers. Compared to existing techniques, the presented MFAs can be fabricated very quickly and are not limited to certain fiber types. Insertion losses of $< 0.5$ dB over a spectral range of several hundred nanometers have been obtained, which is comparable or better than the industry standard.

Original languageEnglish (US)
Article number6189719
Pages (from-to)2289-2297
Number of pages9
JournalJournal of Lightwave Technology
Issue number14
Publication statusPublished - 2012



  • Graded index fiber
  • mode-field adapter
  • multimode-interference
  • self-imaging

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this