Glossary | Nortel Networks 10396EA, 10292FA manual

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Glossary

attenuation

The decrease in signal strength in an optical fiber caused by absorption and scattering. Attenuation can be calculated to express

•signal loss between two points

•total signal loss of a telecommunications system or segment

attenuator

A device inserted into the electrical or optical path to lessen or weaken the signal.

bandwidth

The range of frequencies within which a fiber-optic medium or terminal device can transmit data or information.

cable

One or more optical fibers enclosed within protective covering(s) and strength members to provide mechanical and environmental protection for the optical fibers.

cable assembly

An optical-fiber cable with connectors installed on one or both ends. The general purpose of the cable assembly is to interconnect the cabling system with opto-electronic equipment at either end of the system. Cable assemblies with connectors on one end only are called pigtails. Assemblies with connectors on both ends are typically called jumpers or patch cords.

cable plant

The cable plant consists of all the optical elements such as fiber connectors and splices between a transmitter and a receiver.

Installation and Networking Guidelines for Optical Routing

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Nortel Networks 10396EA, 10292FA manual Glossary

Contents

Installation and Networking Guidelines for Optical Routing 212257-B Copyright 2002 Nortel Networks Canada requirements only Installation and Networking Guidelines for Optical Routing Nortel Networks Inc. software license agreement Installation and Networking Guidelines for Optical Routing 212257-B Contents Contents Chapter Installing the shelf, OADM, and Omux Figures Figures 212257-B Tables Tables 212257-B Component Function Preface Hard-copy technical manuals Before you beginPreface Technical Solutions Center Telephone How to get help Preface 212257-B Wavelength division multiplexing Chapter Describing the optical routing system Parts of the optical routing system Parts of the optical routing systemGigabit interface converter description Describing the optical routing system Cwdm Gbic transceiver and label Optical add drop multiplexer description Cwdm Oadm network and equipment side connections Network add/drop ring application Optical multiplexer/demultiplexer description Cwdm Oadm ring configuration example Cwdm OMUX-4 Cwdm OMUX-8 network and equipment side connections Cwdm Omux in a point-to-point application Cwdm Omux in a ring application Cwdm Omux point-to-point configuration example Cwdm Omux ring configuration example Describing the optical routing system 212257-B About transmission distance and optical link budget Chapter Calculating transmission distance How to calculate maximum transmission distance How to calculate expected loss budgetCalculating transmission distance Point-to-point transmission distance Point-to-point network configuration example Mesh ring transmission distance Point-to-point signal loss valuesPoint-to-point maximum transmission distance calculations Mesh ring network configuration Mesh ring maximum transmission distance calculations Mesh ring signal loss values Hub and spoke transmission distance Hub and spoke network configuration Hub and spoke maximum transmission distance calculations Hub and spoke signal loss values Preparing for installation Chapter Installing the shelf, OADM, and OmuxExceeding class 1 power level warning Environmental and physical requirements Installing the shelf, OADM, and OmuxElectrostatic discharge Installing the shelf Shelf with plug-in module in 19-inch rack Inserting a Cwdm Oadm or a Cwdm Omux Cabling a Cwdm Oadm Cabling a Cwdm Oadm or a Cwdm Omux Cabling a Cwdm Oadm Cabling a Cwdm OMUX-4 Cabling a four-channel Cwdm Omux Cabling an eight-channel Cwdm Omux Cabling an Cwdm OMUX-8 Removing a Cwdm Oadm or a Cwdm Omux Cwdm Oadm specifications Appendix a Cwdm Oadm specifications Appendix a Cwdm Oadm specifications 212257-B Cwdm Omux specifications Cwdm Omux specificationsAppendix B Appendix B Cwdm Omux specifications 212257-B Precautions Appendix C Handling and cleaning fiber optic equipment Appendix C Handling and cleaning fiber optic equipment Cleaning Fiber Optic ConnectorsTools and Materials Cleaning Single SC and FC Connectors Cleaning Duplex SC Connectors Cleaning Receptacle or Duplex Devices Page Glossary Glossary Dwdm See optical fiber Group of circuits connected at one point on a network See MMF Ndsf An optical wavelength band for WDM optical communications Device that does not require a source of energy to function See SMF WDM Glossary 212257-B Cwdm Omux Index OMUX, Cwdm Index Index Index 212257-B