1.6 Tbit/s (40×40 Gbit/s) DPSK transmission over 3×100 km of TeraLight fibre with direct detection
23 January 2003
By transmitting 40 channels over 300 km of TeraLight fibre, it is shown that optical differential phase shift keying can be used in 100 GHz-spaced 40 Gbit/s systems, with direct detection and a simple receiving filter. Chromatic dispersion tolerance around 300 ps/nm is also measured, compared to 70 ps/nm for NRZ.