Optical frequency-domain chromatic dispersion measurement method for higher-order modes in an optical fiber.
Optical frequency-domain chromatic dispersion measurement method for higher-order modes in an optical fiber.
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DOI：
10.1364/opex.13.010040
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发表时间：
2005-12
期刊：
影响因子：
3.8
通讯作者：
T. Ahn;Yongmin Jung;K. Oh;Dug Young Kim
中科院分区：
文献类型：
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作者：
T. Ahn;Yongmin Jung;K. Oh;Dug Young Kim
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.
