Title :
Experimental transmission with POLQAM and PS-QPSK modulation format using a 28-Gbaud 4-D transmitter
Author :
Buchali, Fred ; Bulow, Henning
Author_Institution :
Bell Labs., Alcatel-Lucent, Stuttgart, Germany
Abstract :
A transmitter with 4 digital-analog converters enabled the generation of 4-D optimized constellation with 6 polarization states (POLQAM) at 28-Gbd. A new feedback signal ensured adaptation of the CMA polarization demultiplexer in the off-line receiver and allowed comparison with polarization-switched QPSK (PS-QPSK) and DP-QPSK.
Keywords :
demultiplexing equipment; differential phase shift keying; digital-analogue conversion; optical feedback; optical receivers; optical transmitters; quadrature amplitude modulation; quadrature phase shift keying; 4-D optimized constellation; 4-D transmitter; CMA polarization demultiplexer; DP-QPSK; POLQAM; PS-QPSK modulation; constant modulus algorithm; digital-analog converters; dual polarization QPSK; feedback signal; off-line receiver; polarization quadrature amplitude modulation; polarization states; polarization-switched QPSK; quadrature phase shift keying; Bit error rate; Constellation diagram; Optical transmitters; Phase shift keying; Receivers; Vectors;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
Conference_Location :
Amsterdam
