Avt. Cartaxo et Jap. Morgado, INTENSITY AND FREQUENCY NOISE TRANSMISSION ALONG SINGLEMODE FIBER AT ZERO-DISPERSION WAVELENGTH, IEE proceedings. Optoelectronics, 145(4), 1998, pp. 211-216
A rigorous small-signal theory for linear and dispersive singlemode fi
bre communication systems operating at the zero-dispersion wavelength
is presented. From this theory, the intensity and frequency noise tran
smission along the singlemode fibre is assessed. The new theory shows
excel:lent consistency with accurate numerical simulations of intensit
y and frequency noise spectra after singlemode fibre transmission. The
oretical and simulation results show that fibre transmission at zero-d
ispersion wavelength leads to intensity and frequency noise spectra at
fibre output, similar to intensity and frequency noise spectra, respe
ctively, at the input to the fibre. Accordingly, at zero-dispersion wa
velength, second-order dispersion effects on the intensity and frequen
cy noise are irrelevant even for ultra-high bit rates and long-haul fi
bre links.