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Mitigating the Last Barrier to High-Speed Optical Tranmission: PMD

This application note focuses on the possible approaches to dealing with excess PMD and highlights the preferred one, from a cost-effective standpoint.

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See the Big Picture with Single-Ended Loop Testing

This application note explains why it is essential to analyze not only the circuit ofinterest, but the environment around the circuit when testing services.

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Connector Inspection and Maintenance

This application note focuses on connectors as key components that interconnect the entire network elements and how to maintain maintain them in good condition to avoid network failure.

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Turning Up 10 Gigabit Ethernet LAN Services over OTN

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

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The Challenge of CWDM Testing

This application note discusses the various challenges of CWDM testing during construction, installation, activation and troubleshooting phases; it also presents specialized testing equipment.

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Cascaded ROADMs and Effective Bandwidth

This application note discusses in-band optical signal-to-noise ratio (OSNR) testing, more specifically when there are several ROADMs in a network.

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MPLS Basics and Testing Needs

This application note examines the basic technical aspects of MPLS and the testing needs associated with deploying and maintaining such a network.

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Smartmode: SONET/SDH Troubleshooting in a Flash!

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...

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An Innovative Solution for In-Service Troubleshooting on Live FTTH Networks

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

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CD Measurement Methods: Phase Shift vs. Differential Phase Shift

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

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