Abstract
We report the results of two field trials aimed at achieving high fiber capacity over regional and
long-haul distances. In the first trial, 41 superchannels with digital Nyquist pulse-shaping were generated and
tightly packed to fill up both
$C$
-band and
$L$
-band. Each subcarrier was modulated with 24.8-Gbaud
dual-polarization 16 quadrature amplitude modulation (DP-16QAM) data. The signal carrying net 54.2 Tb/s data was
transmitted over 634 km of dispersion uncompensated field-installed standard single mode fiber with the aid of
hybrid EDFA and Raman amplification and digital coherent detection. In the second trial for long-haul distances, we
extended the transmission distance over 1,822 km. This increase in reach was achieved by reducing the net total
capacity to 40.5 Tb/s and modulating the signals with dual-polarization 8 quadrature amplitude modulation
(DP-8QAM) Nyquist carrier modulation. A novel rate-adaptive low-density parity-check coding was employed, so that the
transmitted channels can exhibit different code rates, adapted by the concatenation of hard-decision and soft-decision
forward error correcting codes for enhancing error-correction capability. To the best of our knowledge, we achieved
the highest field trial capacity to date at 54.2 Tb/s in regional distances. Furthermore, in long-haul
applications, the reported capacity × distance product of 73.79 Pb/s·km is the highest to date.
© 2013 IEEE
PDF Article
More Like This
Sub-Nyquist field trial using time frequency packed DP-QPSK super-channel within fixed ITU-T grid
L. Potì, G. Meloni, G. Berrettini, F. Fresi, T. Foggi, M. Secondini, L. Giorgi, F. Cavaliere, S. Hackett, A. Petronio, P. Nibbs, R. Forgan, A. Leong, R. Masciulli, and C. Pfander
Opt. Express 23(12) 16196-16208 (2015)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription