Dual-polarization multi-band optical OFDM transmission and transceiver limitations for up to 500 Gb/s uncompensated long-haul links

Elias Giacoumidis, Mutsam Abdel-karim Jarajreh, Stylianos Sygletos, Son Thai Le, Farsheed Farjady, Athanasios Tsokanos, Ali Hamié, Erwan Pincemin, Yves Jaouën, Andrew D Ellis, NJ Doran

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
27 Downloads (Pure)

Abstract

A number of critical issues for dual-polarization single- and multi-band optical orthogonal-frequency division multiplexing (DP-SB/MB-OFDM) signals are analyzed in dispersion compensation fiber (DCF)-free long-haul links. For the first time, different DP crosstalk removal techniques are compared, the maximum transmission-reach is investigated, and the impact of subcarrier number and high-level modulation formats are explored thoroughly. It is shown, for a bit-error-rate (BER) of 10−3, 2000 km of quaternary phase-shift keying (QPSK) DP-MB-OFDM transmission is feasible. At high launched optical powers (LOP), maximum-likelihood decoding can extend the LOP of 40 Gb/s QPSK DP-SB-OFDM at 2000 km by 1.5 dB compared to zero-forcing. For a 100 Gb/s DP-MB-OFDM system, a high number of subcarriers contribute to improved BER but at the cost of digital signal processing computational complexity, whilst by adapting the cyclic prefix length the BER can be improved for a low number of subcarriers. In addition, when 16-quadrature amplitude modulation (16QAM) is employed the digital-to-analogue/analogue-to-digital converter (DAC/ADC) bandwidth is relaxed with a degraded BER; while the ‘circular’ 8QAM is slightly superior to its ‘rectangular’ form. Finally, the transmission of wavelength-division multiplexing DP-MB-OFDM and single-carrier DP-QPSK is experimentally compared for up to 500 Gb/s showing great potential and similar performance at 1000 km DCF-free G.652 line.
Original languageEnglish
Pages (from-to)10975-10986
Number of pages11
JournalOptics Express
Volume22
Issue number9
Early online date30 Apr 2014
DOIs
Publication statusPublished - 5 May 2014

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