Standards Activities Specifications
ITU G.652, G.653, G.655
- Fiber cable
- PMD Coefficient < 0.5 ps/ (km)˝
- Limited distance of 400 km (1 dB penalty) for STM-64 systems
IEC
- No fiber/cable specification to date
- Suggested cable PMD coefficient 0.5 ps/km˝
- Proposed fiber PMD coefficient 0.2 ps/km˝
TIA
- No fiber/cable specification to date
- Closely following ITU, IEC
- Presentations on rationale for cable PMD coefficient 0.5 ps/km˝ for SDH-64 systems
- Proposal for statistical design specification