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Refractive index measurement based on core-cladding mode interferometry in endlessly single mode fiber |
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| Authors: | Daniel Káčik Peter Tvarožek Ivan Martinček Kay Schuster |
| Institution: | 1. Department of Physics, Faculty of Electrical Engineering, University of Zilina in Zilina, Univerzitna 1, ?ilina, Slovakia;2. Institute of Photonic Technology Jena, D-07745 Jena, Germany |
| Abstract: | We propose a simple almost “all-fiber” sensor based on intermodal interference of core and cladding mode in an endlessly single mode photonic crystal fiber. Sensitivity to an external refractive index is studied experimentally and theoretically. |
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