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Experimental investigation of cut-off phenomena in non-linear photonic crystal fibers

J. R. Folkenberg·N. A. Mortensen·K. P. Hansen·T. P. Hansen·H. R. Simonsen·C. Jakobsen
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Abstract

The modal cut-off is investigated experimentally in a series of high quality non-linear photonic crystal fibers. We demonstrate a suitable measurement technique to determine the cut-off wavelength and verify it by inspecting the near field of the modes that may be excited below and above the cut-off. We observe a double peak structure in the cut-off spectra, which is attributed to a splitting of the higher order modes. The cut-off is measured for seven different fiber geometries with different pitches and relative hole size, and a very good agreement with recent theoretical work is found.

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J. R. Folkenberg, N. A. Mortensen, K. P. Hansen, T. P. Hansen, H. R. Simonsen, C. Jakobsen. 2003-07-02. Experimental investigation of cut-off phenomena in non-linear photonic crystal fibers. https://doi.org/10.1364/ol.28.001882

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