Measuring dispersion characteristics of elliptical-core optical fiber using white-light spectral interferometry

Petr Hlubina; Tadeusz Martynkien; Waclaw Urbańczyk

doi:10.1117/12.675769

20 April 2006 Measuring dispersion characteristics of elliptical-core optical fiber using white-light spectral interferometry

Petr Hlubina, Tadeusz Martynkien, Waclaw Urbańczyk

Author Affiliations +

Proceedings Volume 6158, Lightmetry and Light and Optics in Biomedicine 2004; 61580D (2006) https://doi.org/10.1117/12.675769
Event: Lightmetry and Light and Optics in Biomedicine 2004, 2004, Warsaw, Poland

Abstract

A spectral-domain white-light interferometric technique employing a low-resolution spectrometer is used for measuring dispersion characteristics of a two-mode elliptical-core optical fiber. The technique utilizes the fact that the spectral interference fringes are resolved at the output of a tandem configuration of a Michelson interferometer and a two-mode optical fiber under test only in the vicinities of so-called equalization wavelengths at which the optical path difference (OPD) in the interferometer is the same as the intermodal or differential group OPD. Measuring the OPD adjusted in the interferometer as a function of the equalization wavelength serves for dispersion characterization of the optical fiber guiding two spatial modes in two polarizations. We measured the dispersion of the intermodal group OPD between the LP_0l and LP₁₁ spatial modes, which were X-polarized or Y-polarized, and the dispersion of the group modal birefringence for the LP_0l and LP₁₁ spatial modes. The measured data were fitted to polynomials to obtain the dispersions of both the differences between propagation constants of the LP modes and the phase modal birefringences.

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Petr Hlubina, Tadeusz Martynkien, and Waclaw Urbańczyk "Measuring dispersion characteristics of elliptical-core optical fiber using white-light spectral interferometry", Proc. SPIE 6158, Lightmetry and Light and Optics in Biomedicine 2004, 61580D (20 April 2006); https://doi.org/10.1117/12.675769

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