We experimentally confirmed the effectiveness of chromatic dispersion compensation by overlap frequency-domain equalization in real-time digital signal processing for a 127 Gb/s polarization-multiplexed quadrature phase shift keying (PM-QPSK) signal up to 56,200 ps/nm. We verified a penalty lower than 0.55 dB for accumulated dispersion over a 3350 km single-mode-fiber- (SMF-) only transmission line. We also demonstrated the transmission of a 127 Gb/s PM-QPSK signal in a 50-GHz-spacing 5-channel wavelength division multiplexing configuration over the same SMF-only line with a received Q factor of 10.1 dB.
© 2012 OSA
Original Manuscript: May 31, 2012
Revised Manuscript: October 4, 2012
Manuscript Accepted: October 5, 2012
Published: October 30, 2012
Manabu Arikawa, Takeshi Okamoto, Mitsunori Muraki, Daisaku Ogasahara, Emmanuel Le Taillandier de Gabory, Toshiharu Ito, and Kiyoshi Fukuchi, "Transmission of a 127 Gb/s PM-QPSK Signal Over a 3350 km SMF-Only Line With Chromatic Dispersion Compensation Using Real-Time DSP [Invited]," J. Opt. Commun. Netw. 4, B161-B167 (2012)