I’m highly suspicious about group dispersion over long distances. Today’s infrastructure was developed for a certain range of frequencies. Broading it right away wouldn’t be applicable that easy - we would need to introduce error correction which compromises the speed multiplier.
The zero dispersion wavelength of G.652.D fiber is between 1302 nm and 1322 nm, in the O-band.
Typical current DWDM systems operate in the range of 1528.38 to 1563.86nm, in the C-band.
Group dispersion in the E-band and S-band is lower than at current DWDM wavelengths, because they sit between O-band and C-band, and it pretty much linearly increases from it’s zero dispersion wavelength.
I’m highly suspicious about group dispersion over long distances. Today’s infrastructure was developed for a certain range of frequencies. Broading it right away wouldn’t be applicable that easy - we would need to introduce error correction which compromises the speed multiplier.
Too lazy to get the original paper though
The zero dispersion wavelength of G.652.D fiber is between 1302 nm and 1322 nm, in the O-band.
Typical current DWDM systems operate in the range of 1528.38 to 1563.86nm, in the C-band.
Group dispersion in the E-band and S-band is lower than at current DWDM wavelengths, because they sit between O-band and C-band, and it pretty much linearly increases from it’s zero dispersion wavelength.