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DWDM GBIC 
Transceivers

Refer to 

specific product numbers

DWDM GBIC transceivers are used as part of a DWDM optical 
network to provide high-capacity bandwidth across an optical 
fiber network. 

There are 32 fixed-wavelength GBICs that support the 
International Telecommunications Union (ITU) 100 GHz 
wavelength grid. 

See 

 for a list of the wavelengths. 

Refer to your release notes for a list of compatible modules and 
the software release level necessary to support these DWDM 
GBICs. 

 shows the physical appearance of the DWDM 

GBIC. 

R/O WDM 
GBIC 

WDM-GBIC-REC

The R/O WDM GBIC receiver (WDM-GBIC-REC) operates as 
a pluggable receiver on any unidirectional link in a CWDM or 
DWDM transport network; there is no transmitter in the GBIC. 

The receiver can be used for all wavelengths supported by Cisco 
CWDM and DWDM transceivers and can be used 
interchangeably with 1000BASE-SX, 1000BASE-LX/LH, and 
1000BASE-ZX transceivers on a port-by-port basis. 

The W/O WDM receiver has a single SC connector. 

Refer to your release notes for a list of compatible modules and 
the software release level necessary to support these R/O WDM 
GBICs. 

CWDM SFP 
Transceivers

Refer to 

 for 

specific product numbers

The Coarse Wavelength Division Multiplexing (CWDM) SFPs 
are hot-swappable, transceiver components that you plug into 
SFP-compatible modules and supervisor engines. 

The SFP transceiver uses an LC optical connector to connect to 
single-mode fiber-optic (SMF) cable. 

You can connect the CWDM SFPs to CWDM passive optical 
system optical add/drop multiplexer (OADM) modules or 
multiplexer/demultiplexer plug-in modules using single-mode 
fiber-optic cables. 

Refer to your release notes for a list of compatible modules and 
the software release level necessary to support these DWDM 
GBICs.