DWDM over CWDM

DWDM over CWDM Device (DWDM & CWDM Bandpass Component)

There are two types of wavelength division multiplexing (WDM) standards: CWDM - coarse wavelength division multiplexing, and DWDM - dense wavelength division multiplexing. CWDM used to be a more popular low cost entry point for many customers for the GbE rates, due to the difference in economic scale (typically a third of the cost of the equivalent DWDM optics), limited budget, and typical initial requirements not to exceed 8 wavelengths. As the need for capacity grows and service rate increases to 10G/40G/100G, there is a demand to increase the capacity of existing CWDM networks.

CWDM and DWDM (100Ghz grid) channel width comparison

Growing capacity through adding DWDM wavelengths onto CWDM wavelengths fiber

Specification

Ordering Information