Abstract

We report on the experimental demonstration of single channel 28 Gbaud QPSK and 16-QAM zero-guard-interval (ZGI) CO-OFDM transmission with only 1.34% overhead for OFDM processing. The achieved transmission distance is 5120 km for QPSK assuming a 7% forward error correction (FEC) overhead, and 1280 km for 16-QAM assuming a 20% FEC overhead. We also demonstrate the improved tolerance of ZGI CO-OFDM to residual inter-symbol interference compared to reduced-guard-interval (RGI) CO-OFDM. In addition, we report an 8-channel wavelength-division multiplexing (WDM) transmission of 28 Gbaud QPSK ZGI CO-OFDM signals over 4160 km.

© 2012 OSA

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References

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    [CrossRef]
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2011

2010

P. Winzer, “Beyond 100G Ethernet,” IEEE Commun. Mag.48(7), 26–30 (2010).
[CrossRef]

2009

2008

1997

T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun.45(12), 1613–1621 (1997).
[CrossRef]

Buchali, F.

Chandrasekhar, S.

Chen, C.

Cox, D. C.

T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun.45(12), 1613–1621 (1997).
[CrossRef]

Gnauck, A. H.

Jansen, S. L.

Liu, X.

Ma, Y.

Morita, I.

Peckham, D. W.

Plant, D. V.

Schenk, T. C. W.

Schmidl, T. M.

T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun.45(12), 1613–1621 (1997).
[CrossRef]

Shieh, W.

Tanaka, H.

Winzer, P.

P. Winzer, “Beyond 100G Ethernet,” IEEE Commun. Mag.48(7), 26–30 (2010).
[CrossRef]

Winzer, P. J.

Yang, Q.

Yi, X.

Zhu, B.

Zhuge, Q.

IEEE Commun. Mag.

P. Winzer, “Beyond 100G Ethernet,” IEEE Commun. Mag.48(7), 26–30 (2010).
[CrossRef]

IEEE Trans. Commun.

T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun.45(12), 1613–1621 (1997).
[CrossRef]

J. Lightwave Technol.

J. Opt. Netw.

Opt. Express

Other

X. Liu, S. Chandrasekhar, P. J. Winzer, S. Draving, J. Evangelista, N. Hoffman, B. Zhu, and D. W. Peckham, “Single coherent detection of a 606-Gb/s CO-OFDM signal with 32-QAM subcarrier modulation using 4x80-Gsamples/s ADCs,” in Proc. ECOC'10, Paper. PD2.6.

Q. Zhuge, M. Morsy-Osman, M. E. Mousa-Pasandi, X. Xu, M. Chagnon, Z. A. El-Sahn, C. Chen, and D. V. Plant, “Experimental demonstration of 28 Gbaud QPSK and 16-QAM zero-guard-interval CO-OFDM transmissions,” in Proc. ECOC'12, Paper. Tu.4.C.2.

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Figures (6)

Fig. 1
Fig. 1

(a) Transmitted ZGI CO-OFDM frame. (b) Block diagram of ZGI CO-OFDM receiver.

Fig. 2
Fig. 2

Experimental setup. ECL: external cavity laser. PC: polarization controller. PBS/PBC: polarization beam splitter/combiner. ODL: optical delay line. SW: switch.

Fig. 3
Fig. 3

Measured BER vs. OSNR (0.1nm) for (a) QPSK and (b) 16-QAM signals.

Fig. 4
Fig. 4

Measured BER vs. transmission distance for (a) 28 Gbaud QPSK and (b) 16-QAM signals.

Fig. 5
Fig. 5

Measured Q-factor penalty vs. (a) residual CD and (b) time offset. QPSK: 5120 km. 16-QAM: 1280 km.

Fig. 6
Fig. 6

(a) The transmitter for the WDM transmission. IL: interleaver. (b) The spectrum of the generated 8-channel WDM signal. (c) The BER performance of all channels.

Tables (1)

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Table 1 Comparison of the CP overhead

Equations (1)

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H new 1 = H old 1 H FDI 1

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