PMID- 25606935
OWN - NLM
STAT- MEDLINE
DCOM- 20151110
LR  - 20181023
IS  - 1094-4087 (Electronic)
IS  - 1094-4087 (Linking)
VI  - 22
IP  - 24
DP  - 2014 Dec 1
TI  - On the performance of multichannel digital backpropagation in high-capacity 
      long-haul optical transmission.
PG  - 30053-62
LID - 10.1364/OE.22.030053 [doi]
AB  - The performance of digital backpropagation (DBP) equalization when applied over 
      multiple channels to compensate for the nonlinear impairments in optical fiber 
      transmission systems is investigated. The impact of a suboptimal multichannel DBP 
      operation is evaluated, where implementation complexity is reduced by varying 
      parameters such as the number of nonlinear steps per span and sampling rate. 
      Results have been obtained for a reference system consisting of a 5x32 Gbaud 
      PDM-16QAM superchannel with 33 GHz subchannel spacing and Nyquist pulse shaping 
      under long-haul transmission. The reduction in the effectiveness of the algorithm 
      is evaluated and compared with the ideal gain expected from the cancellation of 
      the nonlinear signal distortion. The detrimental effects of polarization mode 
      dispersion (PMD) with varying DBP bandwidth are also studied. Key parameters 
      which ensure the effectiveness of multichannel DBP are identified.
FAU - Liga, Gabriele
AU  - Liga G
FAU - Xu, Tianhua
AU  - Xu T
FAU - Alvarado, Alex
AU  - Alvarado A
FAU - Killey, Robert I
AU  - Killey RI
FAU - Bayvel, Polina
AU  - Bayvel P
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Opt Express
JT  - Optics express
JID - 101137103
SB  - IM
MH  - Computer Simulation
MH  - *Optical Phenomena
MH  - *Signal Processing, Computer-Assisted
EDAT- 2015/01/22 06:00
MHDA- 2015/11/11 06:00
CRDT- 2015/01/22 06:00
PHST- 2015/01/22 06:00 [entrez]
PHST- 2015/01/22 06:00 [pubmed]
PHST- 2015/11/11 06:00 [medline]
AID - 304923 [pii]
AID - 10.1364/OE.22.030053 [doi]
PST - ppublish
SO  - Opt Express. 2014 Dec 1;22(24):30053-62. doi: 10.1364/OE.22.030053.