| Autor: |
Sleiffer, V. A. J. M., Veljanovski, V., van den Borne, D., Capasso, J., Kuluslu, H., Seixas, J., Schramm, V., Tschersich, A., Nogueira, R., Pavlovic, N. B., Ivarson, K., Spaelter, S., de Waardt, H. |
| Zdroj: |
Journal of Lightwave Technology; Feb2012, Vol. 30 Issue 4, p624-633, 10p |
| Abstrakt: |
We show successful transmission of 45.8 and 125 Gb/s coherent-detected polarization-multiplexed quadrature phase-shift keying (CP-QPSK) over both 2054 and 4108 km of 10 Gb/s nonreturn-to-zero-optimized field-deployed submarine cable. Moreover, we report successful transmission of 45.8 Gb/s coherent-detected polarization-multiplexed binary phase-shift keying (CP-BPSK) over 9420 km of legacy submarine fiber. We present single-channel transmission results, as well as wavelength-division multiplexed (WDM) transmission results with copropagating WDM channels placed on a 100 GHz and on a 50 GHz grid, where we optimized the transmission performance by sweeping the launch power and precompensation. For 45.8 Gb/s CP-QPSK, a margin with respect to the forward error correction (FEC) limit of 1.7 dBQ was obtained after transmitting over a 4108 km distance in a 50 GHz grid WDM configuration. Considering the transmission of 125 Gb/s CP-QPSK over the same distance and with the same channel configuration, a 1.1 dBQ margin was measured, showing the feasibility of a tenfold increase in transmission capacity over legacy submarine fiber. This significantly delays the costly alternative of deploying a new submarine cable. For the transmission of a 45.8 Gb/s CP-BPSK modulated signal on a 50 GHz WDM grid over a 9420 km distance, a margin of 1.2 dBQ with respect to the FEC limit is reported. This underlines the great robustness of CP-BPSK toward nonlinear fiber impairments and thereby the feasibility to cross transoceanic distances with this modulation format. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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