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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...

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...

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...

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 article presents the phase-shift method, a more commonly used and standardized technique to determine the chromatic dispersion is referred to and in which light is sinusoidal-intensity modulated.

This article describes methods to optimize OTDR measurement parameters by presenting processes and key parameters.

This article demonstrates how OSNR can be derived, for each individual channel, from an optical spectrum measurement to obtain indirect information about the performance of these channels and hence of...

This application note demonstrates how the test features of the Packet Blazer SAN FTB-8520 can qualify and optimize an end-to- end Fibre Channel network as a whole, at all levels, including the interc...