Advantages and disadvantages of DWDM

DWDM stands for dense wavelength division multiplexing, It has to increases bandwidth by allowing different data streams to be sent simultaneously over a single optical fiber network. Here this article gives information about DWDM  to know more details about it.

DWDM advantages :
  • Improve scalability
  • Provide extra resilience
  • New services to be provide
  • Maximum capacity system available
  • Can conserve switched bandwidth
  • Permits multiple logical topological over single physical MAN
  • Greater fiber capacity
  • DWDM system capable of longer span length
  • Easier network expansion
DWDM disadvantages :
  • Not cost effective for low channel numbers
  • Complex technology require
  • More space
  • More power
  • Startup cost more than equivalent CWDM
  • High accuracy laser and wave filter