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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 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 presents the FOT-930 MaxTester, reducing the need for several test instruments, reducing the chance of error, reducing training time, while saving lots of money.

This application explains EXFO's offeringfor commissioning, turning-up and qualifying 10 GbE LAN services end-to-end over OTN.

This paper provides background on the different topologies used to deliver Ethernet services, their corresponding test methodologies and the selection of the appropriate test mode according to the top...