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Wavelength-division multiplexing
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== Enhanced WDM == [[Cisco]]'s Enhanced WDM system is a network architecture that combines two different types of multiplexing technologies to transmit data over optical fibers. EWDM combines {{nowrap|1 Gbit/s}} Coarse Wave Division Multiplexing (CWDM) connections using SFPs and GBICs with {{nowrap|10 Gbit/s}} Dense Wave Division Multiplexing (DWDM) connections using [[XENPAK]], [[10 Gigabit Ethernet|X2]] or [[XFP]] DWDM modules. The Enhanced WDM system can use either passive or boosted DWDM connections to allow a longer range for the connection. In addition to this, [[C form-factor pluggable]] modules deliver {{nowrap|100 Gbit/s}} Ethernet suitable for high-speed Internet backbone connections.
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