Growing CWDM Networks with DWDM
For years now service providers have been using Coarse Wavelength Division Multiplexing (CWDM) to increase the capacity of fiber optic links. CWDM filters offer up to 18 ITU defined wavelengths and has been an ideal way to transport 1Gbps and 10Gbps circuits over a single fiber span. What we are seeing now seems to be an uphill…