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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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OTDRs: End of Non-Linearity Issues

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.

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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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Ethernet Testing: Determining Appropriate Test Cases and Modes

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...

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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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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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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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40 Gbit/s Network Performance and Service Disruption Time Measurement

This application note outlines the SDT measurement approach of the FTB-8140 Transport Blazer that should be performed during the installation and commissioning of network elements and their new circui...

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