2003/07/02 by J. R. Folkenberg, Jacob Riis Folkenberg, N. A. Mortensen +9 · 1 citation
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Optical Network Technologies #Photonic Crystal and Fiber Optics #physics.optics
paper · pdf · doi:10.1364/ol.28.001882
published as Opt. Lett. 28, 1882 (2003). · 3 pages including 1 table and 4 figures. Accepted for Optics Letters
arxiv created 2003/07/02 · openalex publication_date 2003/10/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Modal cutoff is investigated experimentally in a series of high-quality nonlinear photonic crystal fibers. We demonstrate a suitable measurement technique with which to determine the cutoff wavelength and verify the technique by inspecting the near field of the modes that may be excited below and above the cutoff. We observe a double-peak structure in the cutoff spectra, which is attributed to splitting of the higher-order modes. The cutoff is measured for seven different fiber geometries with different pitches and relative hole sizes, and very good agreement with recent theoretical work is found.