| 摘要 |
An optical transmission system is provided for using an optical fiber as an optical transmission line. The optical transmission line is comprised of a holy fiber provided with a core portion positioned at the center, and a clad portion that is positioned in an outer circumference of the core portion and that has a plurality of vacant holes periodically disposed around the core portion; and a dispersion-compensated optical fiber that is connected in adjacent to the holy fiber and collectively compensates wavelength dispersion of the holy fiber in each using wavelength in whichever not less than two wavelength bands are out of O, E, S, C and L bands in a predetermined scope in accordance with transmission speeds. This enables the optical transmission system to achieve wide band, large capacity, long distance transmission. |
