The Cisco Dense Wavelength-Division Multiplexing (DWDM) Small Form Factor Pluggable (SFP) 1000BASE-DWDM 1545.32nm SFP module allow enterprise companies and service providers to provide scalable and easy-to-deploy Gigabit Ethernet or Fibre Channel services in their networks. Support for International Telecommunication Union (ITU) 100-GHz wavelength grid.