3.2 Tb/s-1500 km WDM transmission experiment using 64 nm hybrid repeater amplifiers

Incomplete collisions of wavelength-division multiplexed dispersion-managed solitons

“…In our simulations, a particularly good combination was found when we based the choice of parameters on DM-soliton WDM transmission experiments recently performed by the NEC. 2,3 In this case, M ϭ 7.0 and ϭ 0.578, corresponding to ʈ uʈ 2 ϭ 1.55, rms ϭ 3.717, and rms ϭ 0.540. Figure 5 shows an incomplete collision between NEC pulses with the same temporal and spectral separations as in Fig.…”

“…Throughout this study, we fix our units by using values derived from the two NEC experiments, 2,3 with which error-free transmission was achieved at 1.1 Tbits/s (55 WDM channels at 20 Gbits/s, each with 0.8-nm channel spacing) over 3020 km and 3.2 Tbits/s (160 WDM channels at 20 Gbits/s each with 0.4-nm channel spacing) over 1500 km, respectively. The relevant pulse parameters for normalization purposes are P * ϭ 1 mW, z NL ϭ 465 km, and ͗kЉ͘ ϭ Ϫ0.10 ps 2 /km, with FWHM ϭ 18 ps (estimated) at the chirp-free point in the anomalous fiber section.…”

“…The potential of dispersion-managed (DM) solitons was recently demonstrated by transmission experiments at ultrahigh capacities. [1][2][3] A key ingredient in these experiments is the simultaneous use of dispersion management and wavelength-division multiplexing. Recently, considerable study has been devoted to understanding the properties of DM solitons and their interactions (see, e.g., Refs.…”

“…These results complement recent studies of partial collisions 10,11 and collisions at zero average dispersion. 12 For parameter values related to recent WDM experiments 2,3 (hereafter, the NEC experiments), however, the previous effects disappear and the interaction properties of the pulses are in some cases even more favorable than for the pure NLS equation.…”

The evolution of optical systems: Optics everywhere

“…[9][10][11] Note, for example, the 1994 experiment where 17 WDM channels, each having a data rate of 20 Gb/s, were transmitted over 150 km of dispersion managed fiber.…”