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Single parity check-coded 16QAM over spatial superchannels in multicore fiber transmission

Tobias Eriksson (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; R. S. Luis ; B. J. Puttnam ; J. M. D. Mendinueta ; Peter Andrekson (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Magnus Karlsson (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Y. Awaji ; N. Wada ; Erik Agrell (Institutionen för signaler och system, Kommunikationssystem)
Optics Express (1094-4087). Vol. 23 (2015), 11, p. 14569-14582.
[Artikel, refereegranskad vetenskaplig]

We experimentally investigate single-parity check (SPC) coded spatial superchannels based on polarization-multiplexed 16-ary quadrature amplitude modulation (PM-16QAM) for multicore fiber transmission systems, using a 7-core fiber. We investigate SPC over 1, 2, 4, 5 or 7 cores in a back-to-back configuration and compare the sensitivity to uncoded PM-16QAM, showing that at symbol rates of 20 Gbaud and at a bit-error-rate (BER) of 10(-3), the SPC superchannels exhibit sensitivity improvements of 2.7 dB, 2.0 dB, 1.7 dB, 1.3 dB, and 1.1 dB, respectively. We perform both single channel and wavelength division multiplexed (WDM) transmission experiments with 22 GHz channel spacing and 20 Gbaud channel symbol rate for SPC over 1, 3 and 7 cores and compare the results to PM-16QAM with the same spacing and symbol rate. We show that in WDM signals, SPC over hl1 core can achieve more than double the transmission distance compared to PM-16QAM at the cost of 0.91 bit/s/Hz/core in spectral efficiency (SE). When sharing the parity-bit over 7 cores, the loss in SE becomes only 0.13 bit/s/Hz/core while the increase in transmission reach over PM-16QAM is 44 %. (C) 2015 Optical Society of America



Denna post skapades 2015-07-17. Senast ändrad 2016-07-01.
CPL Pubid: 219779

 

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