TY - GEN
T1 - Non-uniform step-size based split step fourier method for mitigating fiber transmission impairments in N-channel 224Gbit/s PolMux-16QAM system
AU - Asif, Rameez
AU - Lin, Chien Yu
AU - Schmauss, Bernhard
PY - 2012
Y1 - 2012
N2 - We discuss the performance enhancement of digital backward propagation by step-size selection for implementing split-step Fourier method (SSFM) in 224Gbit/s PolMux-16QAM system. The two DBP algorithms based on the step-size selection methods; (a) constant step-size based modified DBP (M-DBP) and (b) non-uniform, i.e. logarithmic, step-size based DBP (L-DBP), are compared for diverse fiber types i.e. Standard Single Mode Fiber (SMF), Non-Zero Dispersion Shifted Fiber (NZDSF), Large Effective Area Pure-Silica-Core-Fiber (LA-PSCF) and Large Effective Area Fiber (LEAF). Non-uniform step-size distribution enhances the transmission distance upto 32% in large effective area pure-silica-core- fiber (LA-PSCF) link as compared to SMF by employing M-DBP, while we have observed an additional 13% increase in transmission distance by employing L-DBP. Furthermore, the impact of reconfigurable add-drop multiplexers (ROADMs) are also investigated in 10×224Gbit/s system with 50GHz channel spacing grid. ROADMs reduce the signal bandwidth and collectively increase the peak to average power ratio, resulting in higher non-linearities that limits the performance of digital backward propagation. The results also depict that heterogeneous fiber links significantly reduce the nonlinear threshold point (NLT) of the transmission system.
AB - We discuss the performance enhancement of digital backward propagation by step-size selection for implementing split-step Fourier method (SSFM) in 224Gbit/s PolMux-16QAM system. The two DBP algorithms based on the step-size selection methods; (a) constant step-size based modified DBP (M-DBP) and (b) non-uniform, i.e. logarithmic, step-size based DBP (L-DBP), are compared for diverse fiber types i.e. Standard Single Mode Fiber (SMF), Non-Zero Dispersion Shifted Fiber (NZDSF), Large Effective Area Pure-Silica-Core-Fiber (LA-PSCF) and Large Effective Area Fiber (LEAF). Non-uniform step-size distribution enhances the transmission distance upto 32% in large effective area pure-silica-core- fiber (LA-PSCF) link as compared to SMF by employing M-DBP, while we have observed an additional 13% increase in transmission distance by employing L-DBP. Furthermore, the impact of reconfigurable add-drop multiplexers (ROADMs) are also investigated in 10×224Gbit/s system with 50GHz channel spacing grid. ROADMs reduce the signal bandwidth and collectively increase the peak to average power ratio, resulting in higher non-linearities that limits the performance of digital backward propagation. The results also depict that heterogeneous fiber links significantly reduce the nonlinear threshold point (NLT) of the transmission system.
UR - http://www.scopus.com/inward/record.url?scp=84877864849&partnerID=8YFLogxK
U2 - 10.1109/ICON.2012.6506543
DO - 10.1109/ICON.2012.6506543
M3 - Conference contribution
AN - SCOPUS:84877864849
SN - 9781467345217
T3 - IEEE International Conference on Networks, ICON
SP - 109
EP - 113
BT - 2012 18th IEEE International Conference on Networks, ICON 2012
T2 - 2012 18th IEEE International Conference on Networks, ICON 2012
Y2 - 12 December 2012 through 14 December 2012
ER -