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The advent of new advanced modulation formats to transport 40 Gbit/s and 100 Gbit/s transmission rates has resulted in numerous publications on polarization mode dispersion (PMD) and differential grou...

SyncWatch-110 and SyncWatch Software qualify and monitor next-gen networks that use Precision Time Protocol, SyncE, and/or traditional TDM synchronization testing technologies.

Service providers must manage and monitor real-time services across complex, multivendor environments to continuously assure customer/user experience expectations are met. Gain end-to-end visibility o...

The new “multilevel” DP-QPSK coherent modulation scheme improves “traditional” approaches to line-side transponder testing. But manufacturers still require a simple way to test transmitters in manufac...

Applying service assurance early in a VoIP rollout ensures the service is ready at the same time as the network. Operators will be trained. Metrics will be relevant. Critical parameters will be captur...

BrixNGN continually monitors the performance and quality of converged services from the provider edge to end-users to effectively guarantee service level agreements and meet customer requirements, whi...

This article reports and analyzes states of polarization (SOP) and polarization mode dispersion (PMD) measurements on aerial fiber under moderate to severe wind conditions.