Invited paper: Characterization of few mode fibers and devices

Lars Grüner-Nielsen* (Invited author), Neethu Mariam Mathew (Invited author), Karsten Rottwitt (Invited author)

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


This paper reviews characterization techniques for few mode fibers and components. The focus is on interferometric techniques including spatial and spectral resolved imaging (S2). Simple interferometric measurements are shown to be able to give quite comprehensive information including measurement of relative group delay. A new improved algorithm for analyzing S2 data for the case of only two modes is presented. The effect of polarization and rotation of asymmetric modes is treated as well.

Original languageEnglish
Article number101972
JournalOptical Fiber Technology
Publication statusPublished - 1 Nov 2019


  • Few mode fibers
  • Interference
  • Optical fiber measurements

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