We demonstrate that the transmission of 40 Gbits/s return-to-zero differential phase-shift keying (RZ-DPSK) signals is robust to lumped dispersion mapping on a typical installed terrestrial single-mode fiber/dispersion compensating fiber (SMF-DCF) link and will withstand, in this case, propagation through over 800 km of SMF with zero in-line group-velocity dispersion compensation while maintaining similar performance to configurations with periodic mapping. We establish that upgrading similar point-to-point links, which have lumped dispersion maps, are compatible with 40 Gbits/s RZ-DPSK and that economic benefits can be realized when implementing lumped dispersion mapping in new 40 Gbits/s RZ-DPSK terrestrial links, while incurring a relatively low performance penalty. (c) 2008 Optical Society of America.
Bhamber, R., French, C., Turitsyn, S. K., Mezentsev, V., Forysiak, W., & Nijhof, J. H. B. (2008). Lumped dispersion mapping and performance margins in existing SMF-DCF terrestrial links. Journal of Optical Networking, 7(2), 106-110. https://doi.org/10.1364/JON.7.000106