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Polarization Mode Dispersion (PMD) Simplified

This article simplifies polarization mode dispersion, using specific examples and formulas.

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Chromatic Dispersion Measurement: The EXFO Phase-Shift Method

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.

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Optimizing OTDR Measurement Parameters

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

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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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Testing Jitter and Wander in the Field—Is it Necessary?

This application note discusses various aspects of jitter and wander—the theory, the causes, the effects they have on networks, and related field testing.

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Field Testing for Active Ethernet Networks

This application note proposes a solution for active Ethernet testing from the installation and service turn-up phase to service-level agreement verification for Active Ethernet deployments.

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Quality of Service: Key Concepts and Testing Needs

This application note introduces various concepts related to QoS and the testing needs for such mechanisms.

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Service Activation Made Easy

This application note covers the basics of service activation and explains how the service-activation scheme can be very different, depending on the FTTH network topology.

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Over-Clocked Optical Transport Network

This application provides an overview of the over-clocked OTN technology that enables the transportation of 10 GbE LAN signals transparently over OTN.

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PMD vs. Mode Coupling

This application note provides an overview of the basic concepts of PMD and the impact that strong-mode and weakmode coupling have on PMD testing; the accuracy of test instruments will also be discuss...

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