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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 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 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...

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

This application note highlights the differences between the differential phase-shift method and the phase-shift method.

This application note demonstrates how EXFO's PPM-350B enables the user to accurately locate the problem by measuring all signals to verify if each one is still within specifications.

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 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 demonstrates how linearity at the far end of an OTDR trace is very important to guarantee proper link loss, event loss and attenuation readings.