| 摘要 |
The present invention is related to an dispersion compensating optical fiber technology, comprising a central core, a middle part with a refractive index lower than this central core, and a cladding with a refractive index higher than said middle part and lower than said central core, characterized in: an outer diameter of said middle part being 2.5 DIFFERENCE 3.5 times an outer diameter of said central core; a relative refractive index difference of said cladding to said middle part being -0.08 DIFFERENCE -0.2% with the refractive index of the cladding being zero; and having substantially single-mode transmission in the wavelength 1.55 mu m band, the chromatic dispersion being -80 ps/nm/km or less, the dispersion slope being +0.08 ps/nm2/km or less, and the bending loss being 1.0 dB/m or less.
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