October 2018
Intermediate to advanced
555 pages
17h 33m
English
Content preview from Principles of Synchronous Digital Hierarchy
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16 Principles of Synchronous Digital Hierarchy
1.10.4 Dense Wavelength Division Multiplexing
The philosophy, principles, and advantages of DWDM are the same as those
mentioned above for CWDM, with the difference that DWDM packs many
more wavelengths, typically 80 and higher, with the present systems being
available up to 160 wavelengths.
The DWDM technology has once again revolutionized the telecom sce-
nario, and it would not be an exaggeration to say that it has revolutionized
the SDH revolution. Apart from improving their quality and reliability, the
OFC, SDH, and DWDM are the technologies responsible for the very inex-
pensive rates of ...
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