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 requires
- More space
- More power
- Startup cost more than equivalent CWDM
- High accuracy laser and wave filter
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