The Cisco® Dense Wavelength-Division Multiplexing (DWDM) Small Form Factor Pluggable (SFP) module allow enterprise companies and service providers to provide scalable and easy-to-deploy Gigabit Ethernet or Fibre Channel services in their networks. Main features of the Cisco DWDM SFP include: - Support for International Telecommunication Union (ITU) 100-GHz wavelength grid - Match for wavelength plan of Cisco 100-GHz ONS product family - Fixed-wavelength SFP, with 40 different SFP models - Hot-swappable input/output device that plugs into Gigabit Ethernet SFP ports or slots of a Cisco switch or router, linking the port with the network