TY - JOUR AU - Tudury, G. E. AU - Salem, Reza AU - Carter, Gary M. AU - Murphy, Thomas E. TI - Transmission of 80 Gbit/s over 840 km in standard fibre without polarisation control JO - Electron. Lett. VL - 41 IS - 25 SP - 1394 EP - 1396 PY - 2005 DO - 10.1049/el:20053622 AB - Error-free pseudolinear transmission of 80 Gbit/s single-channel data over 840 km of standard fibre without optical regeneration, forward-error correction or polarisation control, is described. Gated autocorrelation and spectral measurements reveal that the performance is limited primarily by the optical signal-to-noise ratio, rather than dispersion or nonlinearity. ER -