Title :
625 Gbit/s superchannel consisting of interleaved DP-16QAM and DP-QPSK with 4.17 bit/s/Hz spectral efficiency
Author :
Eriksson, Tobias A. ; Tipsuwannakul, Ekawit ; Jianqiang Li ; Karlsson, Magnus ; Andrekson, Peter A.
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
We experimentally investigated a superchannel consisting of 25 GHz spaced interleaved 3×18.67 GBaud DP-QPSK and 3×18.67 GBaud DP-16QAM. We showed a 0.3 dB improvement in the Q-value averaged over the center two channels compared to an all DP-16QAM superchannel with the same SE after transmission over 480 km and 560 km of SSMF.
Keywords :
light transmission; optical fibre communication; optical links; optical modulation; quadrature amplitude modulation; quadrature phase shift keying; SSMF links; bit rate 625 Gbit/s; frequency 25 GHz; gain 0.3 dB; spectral efficiency; superchannel interleaved GBaud DP-16QAM; superchannel interleaved GBaud DP-QPSK; Adaptive optics; Bit error rate; Optical filters; Optical noise; Phase shift keying; Signal to noise ratio;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
