Title :
Quaternary Duobinary modulation for superchannels with sub-Nyquist subcarrier spacing
Author :
Griesser, Helmut ; Grobe, Klaus ; Elbers, J.
Author_Institution :
ADVA Opt. Networking, Munich, Germany
Abstract :
DP-DQDB (Quaternary Duobinary) and DP-DQPSK with Nyquist pulse shaping, both with coherent reception, are compared w.r.t. the achievable spectral efficiency when employed as closely packed subcarriers of a superchannel without optical filtering of the subchannels.
Keywords :
optical fibre communication; optical pulse shaping; DP-DQDB; DP-DQPSK; Nyquist pulse shaping; coherent reception; quaternary duobinary modulation; spectral efficiency; sub-Nyquist subcarrier spacing; superchannels; Crosstalk; Filtering; Optical crosstalk; Optical filters; Optical receivers; Optical signal processing;
Conference_Titel :
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2012 and the National Fiber Optic Engineers Conference
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4673-0262-3
