Spectral-domain intermodal interference and the effect of a low-resolution spectrometer |
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Authors: | Petr Hlubina |
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Affiliation: | Department of Physics, Technical University Ostrava, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic |
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Abstract: | Spectral-domain intermodal interference is analysed theoretically at the output of a few-mode optical fibre alone and at the output of the optical fibre in a tandem configuration with a Michelson interferometer. The theoretical analysis is performed under general measurement conditions when a broadband source and a low-resolution spectrometer of a Gaussian response function are considered and when the first- and second-order intermodal dispersion effects in the optical fibre are taken into account. The theoretical analysis is performed for two different examples of dispersion curves of a two-mode optical fibre and the effect of the limiting factors is specified. |
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Keywords: | Broadband source Spectral interference Optical fibre Dispersion curve Michelson interferometer Spectrometer Response function Equalization wavelength |
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