| 摘要 |
A single-mode optical fibre comprises a central core (r 1 , ”n 1 ), an intermediate cladding (r 2 , ”n 2 ), a ring (r 3 , ”n 3 ) and an outer cladding. The fibre has an effective area at the wavelength of 1550 nm greater than or equal to 90 µm 2 . The fibre also has a cable cut-off wavelength (» cc ) less than 1260 nm; a mode field diameter at the wavelength of 1310 nm comprised between 8.6 µm and 9.5 µm, a zero chromatic dispersion wavelength comprised between 1300 nm and 1324 nm; and a dispersion slope of less than 0.092 ps/nm 2 -km. The fibre has an effective area greater than 90 µm 2 without degradation of the other optical parameters of the fibre compared with an SSMF. |
