| 摘要 |
The optical fibre has a refractive index profile including more than six levels of index. At a wavelength of 1550 nm, the fibre has a positive chromatic dispersion, and specified values for the gradient of the chromatic dispersion, and the chromatic dispersion itself at this wavelength. The optical fibre has a complex refractive index profile. This includes more than six levels of index. At a wavelength of 1550 nm, the fibre has a positive chromatic dispersion. For the same wavelength, the fibre has a squared ratio linking the effective surface of the fibre to the gradient of the chromatic dispersion, with a numerical value of more than 90,000, and preferably more than 100,000 psim4.nm2.km/ps. At the same wavelength, the gradient of the chromatic dispersion is less than or equal to 0.08 ps/(nm2.km), and the chromatic dispersion itself is less than or equal to 14 ps/(nm.km). The sections of the profile may have equal thickness, or different thicknesses. |
