| 摘要 |
In order to provide a dispersion-compensating optical fiber able to be applied over a broad wavelength band, having a large effective area, and as a result, suppressing the occurrence of non-linear effects, the present invention comprises a dispersion-compensating optical fiber that compensates chromatic dispersion of a 1.3 mum single-mode optical fiber over the entire wavelength range of 1.53-1.63 mum characterized in that, chromatic dispersion at a wavelength of 1.55 mum is -50 ps/nm/km or less, the dispersion slope is negative over the entire wavelength range of 1.53-1.63 mum, a cutoff wavelength is provided at which there is substantially single-mode propagation, bending loss is 30 dB/m or less, effective area is 20 mum<SUP>2 </SUP>or more, and the absolute value of chromatic dispersion during compensation of the chromatic dispersion of a 1.3 mum single-mode optical fiber serving as the target of compensation is 0.5 ps/nm/km or less.
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