Title :
Optimized bandwidth-limited duobinary coding format for ultra dense WDM systems
Author :
N.B. Pavlovic;A.V.T. Cartaxo
Author_Institution :
Inst. de Telecomunicacoes, Inst. Superior Tecnico, Lisbon, Portugal
fDate :
6/27/1905 12:00:00 AM
Abstract :
By varying simultaneously the bandwidths of electrical transmitter filter, multiplexer and demultiplexer, the system performance of several duobinary coding formats is optimized for 40 Gbit/s/channel ultra dense wavelength division multiplexing (UDWDM) system with 50 GHz of channel spacing after 4/spl times/80 km of transmission. It is shown that bandwidth-limited (BL) duobinary generation schemes with optimized electrical transmitter filter bandwidth can achieve a Q-factor improvement of 1.4 dB over BL-conventional duobinary coding schemes. Moreover, the optimized BL-duobinary format achieves a better UDWDM system performance than BL-phase-shaped binary transmission, for which a capacity/spl times/distance record was demonstrated.
Keywords :
"Wavelength division multiplexing","Bandwidth","Optical filters","Optical transmitters","Signal generators","System performance","Bit rate","Electronic mail","Channel spacing","Optical crosstalk"
Conference_Titel :
Transparent Optical Networks, 2005, Proceedings of 2005 7th International Conference
Print_ISBN :
0-7803-9236-1
DOI :
10.1109/ICTON.2005.1506180
