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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...

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...

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.

This application note presents EXFO's powerful tool that simplifies the field engineer’s turn-up and troubleshooting activities for SONET/SDH networks, removing the complexity associated with these ne...

This application note presents EXFO's instruments for in-service PON troubleshooting.