Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño

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This appendix provides an introduction into dense wave division multiplexing (DWDM) principles. 
 

 
The following topics are included in this appendix: 
 

Comparison of SONET TDM and Wave 
Division Multiplexing (WDM), page 355 

 

Value of DWDM in the Metropolitan Area 
Network, page 355 

 

DWDM System Functions, page 356 

 

DWDM Components and Operation, page 357    Optical 

Fibers, 

 

   Transmission 

Challenges, 

 

    Light Sources and Detectors, page 364 

    Light Emitters LEDs and Lasers, page 364 

   Light 

Detectors, 

 

   Optical 

Amplifiers, 

 

    DWDM Multiplexers and Demultiplexers, 

 

    Optical Add/Drop Multiplexers, page 370 

Interfaces to DWDM, page 371 

    Operation of a Transponder Based DWDM 

System, page 371 

   ITU 

Grid,