| 摘要 |
A dispersion management optical fiber transmission line of a superlow loss formed by combining a plurality of optical fibers and suitable for long distance, high speed, large capacity transmission, that is, an optical fiber transmission line including a positive dispersion optical fiber having a positive dispersion and a positive dispersion slope and a negative dispersion optical fiber having a negative dispersion and negative dispersion slope and having a non-zero dispersion at the 1.55 mum, wherein the transmission loss at the 1.55 mum band of the positive dispersion fiber and the negative dispersion fiber are both not more than 0.23 dB/km and the difference in transmission losses of the two optical fibers is not more than 0.05 dB/km.
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