| 摘要 |
Provided is an optical fiber that is in particular suitable for Raman amplification. An effective area at a wavelength of 1570 nm is in a range of 35 mum<2 >to 45 mum<2>, an absolute value of a dispersion slope at the wavelength is equal to or less than 0.04 ps/nm<2>/km, and a dispersion value at the wavelength is in a range of 5 ps/nm/km to 10 ps/nm/km. It is desirable that a refractive index profile contains at least one annular region between a center core and a cladding region.
|
