Summary

Recommendation ITU-T G.666 contains parameters and definitions for devices providing polarization mode dispersion (PMD) compensation needed for transmission and detection of optical signals in a system exhibiting high levels of PMD which would otherwise cause unacceptable levels of system outage. Single and multichannel line PMD compensators are described, as well as single and multichannel PMD compensating receivers. Information on test configurations describing implementation examples of first order and second order PMD emulators and implementation options of PMD compensators can be found in informative appendices.

This revised version adds an example implementation of a receiver-based single-channel optical polarization mode dispersion compensator (PMDC) to Appendix II. This new non-normative text is the only change relative to the 2008 version of this Recommendation.