Broadband near-infrared fibers dispersion measurement using white-light spectral interferometry |
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Authors: | T.M. Karda? C. Radzewicz |
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Affiliation: | University of Warsaw, Institute of Experimental Physics, Ho?a 69, 00-681 Warsaw, Poland |
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Abstract: | A new technique for an experimental determination of the effective refractive index, group refractive index and dispersion of fibers in a broad near-infrared spectral range is presented. The method is based on a white-light spectral interference which utilizes an unbalanced Michelson interferometer. The effective refractive index is obtained by a direct fitting the cosine function to the spectral interference pattern recorded by a low resolution spectrometer. The method has been tested in the spectral range of 1000-1700 nm both with standard telecommunication fibers and a sample of a photonic fiber. The accuracy of dispersion measurement () exceeds those from the previously reported near-infrared white-light spectral interference methods. |
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Keywords: | 42.81.&minus i 42.70.Qs 42.25.Hz 42.87.Bg |
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