The PMD plug-in module for the MTS-6000 and MTS-8000 base units works with the fixed polarization filter method (fixed analyzer) standardized by the ITU-T, IEC, and TIA/EIA. Using the PMD module, the PMD runtimes and the PMD coefficient can be measured and the. what is optimal modulation for copper cable or AUIs? Impact to optics? 100GBASE-VR1, 100GBASE-SR1, etc. Do we leverage existing work? Dispersion effects – does 200G change anything? Module backwards compatibility with slower speeds (impacts modulation and wavelength choices)? Amplified/engineered. Measurement devices used to determine chromatic dispersion (CD) and polarization-mode dispersion (PMD). The transmission quality of high-speed optical networks is affected by dispersion. Dispersion refers to the degradation of the transmission signal caused by spectral and polarization effects in. Integrated fiber characterization and dispersion test solution combining PMD, CD, and AP measurements to characterize high speed networks. We provide support, services, comprehensive training and the resources you need. It's all part of what we do to maximize the value of your VIAVI investment. In the case of a high data rate, long-length (>100 km) system, PMD can become a limiting factor for network spans when the effect of more traditional chromatic dispersion has. PMD occurs when light pulses of different polarizations travel at varying speeds through an optical fiber. The 2820 utilizes the interferometric PMD measurement technique, the fastest PMD measurement method available, that allows the system to perform single-scan PMD measurements in less than 5.