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Published bySabina Mills Modified over 9 years ago
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Chapter 7 WDM Network Elements A.Network Elements : a. Optical line terminals (OLTs) b. Optical add/drop multiplexers (OADMs) c. Optical crossconnects (OXCs) d. Fibers e. Switches B.Topologies : a. Ring b. Mesh
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The features of this architecture a.Wavelength reuse b.Wavelength conversion c.Transparency d.Circuit switching e.Survivability f.Lightpath topology
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7.1 Optical Line Terminals Functional elements inside an OLT : a. Transponder b. Wavelength multiplexer c. Optical amplifier
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7.2 Optical Line Amplifiers OSC: Optical Supervisory Channel
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7.3 Optical Add/Drop Multiplexers
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7.3.1 OADM Architectures Features of OADM a. Total number of wavelengths b. Maximum number of wavelengths that can be dropped/added c. constraints on specific wavelengths that can be dropped/added d. How easy to add and drop additional channels e. Modularization f. Complexity of the physical layer g. Reconfigurability (software controllable)
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7.3.2 Reconfigurable OADMs
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7.4 Optical Crossconnects (OXCs)
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Functions provided by an OXC in a large network a.Service provisioning b.Protection c.Bit rate transparency d.Performance monitoring, test access, and fault localization e.Wavelength conversion f.Multiplexing and grooming
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7.4.1 All-Optical OXC Configurations
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