Optical frequency-domain chromatic dispersion measurement method for higher-order modes in an optical fiber

We propose a new chromatic dispersion measurement method for the higher-order modes of an optical fiber using optical frequency modulated continuous-wave (FMCW) interferometry. An optical fiber which supports few excited modes was prepared for our experiments. Three different guiding modes of the fi...

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Bibliographic Details
Published in:Optics express 2005-12, Vol.13 (25), p.10040-10048
Main Authors: Ahn, Tae-Jung, Jung, Yongmin, Oh, Kyunghwan, Kim, Dug Young
Format: Article
Language:English
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Summary:We propose a new chromatic dispersion measurement method for the higher-order modes of an optical fiber using optical frequency modulated continuous-wave (FMCW) interferometry. An optical fiber which supports few excited modes was prepared for our experiments. Three different guiding modes of the fiber were identified by using far-field spatial beam profile measurements and confirmed with numerical mode analysis. By using the principle of a conventional FMWC interferometry with a tunable external cavity laser, we have demonstrated that the chromatic dispersion of a few-mode optical fiber can be obtained directly and quantitatively as well as qualitatively. We have also compared our measurement results with those of conventional modulation phase-shift method.
ISSN:1094-4087
1094-4087
DOI:10.1364/opex.13.010040