Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1533652 | Optics Communications | 2015 | 6 Pages |
Abstract
In this paper, we report the result of a field trial of 56-Gbaud (224-Gbit/s) and 57.5-Gbaud (230-Gbit/s) dual-polarization quadrature phase shift keying (DP-QPSK) coherent optical transmission over 820Â km installed standard single mode fiber (SSMF). Offline digital signal processing (DSP) was applied for signal recovery and bit-error-rate (BER) counting in our field trial experiments, and BER performance well below the 7% overhead hard-decision forward error correction (FEC) error-free threshold (4.5Ã10â3) at 231-1 pseudo random bit sequence (PRBS) pattern length has been achieved, with the best achievable BERs of 2Ã10â4 (56-Gbaud) and 3Ã10â4 (57.5-Gbaud), respectively. In parallel a 1.15-Tbit/s (5Ã230-Gbit/s) quasi-Nyquist spaced wavelength division multiplexing (WDM) superchannel transmission over the same 820Â km optical field link (FL) was also investigated through numerical simulations based on the same 57.5-Gbaud DP-QPSK signal using 1% roll-off Nyquist pulse shaping with 60-GHz channel spacing, and the results indicate that the BER performance well below the 7% overhead hard-decision FEC error-free threshold (4.5Ã10â3) for the 1.15-Tbit/s DP-QPSK superchannel transmission can be achieved.
Keywords
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Tianhua Xu, Jie Li, Gunnar Jacobsen, Sergei Popov, Anders Djupsjöbacka, Richard Schatz, Yimo Zhang, Polina Bayvel,