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1-Gb SFP Transceivers
1000BASE-CWDM SFP Transceiver Cables
The Coarse Wavelength Division Multiplexing (CWDM) SFP transceivers are hot-swappable transceivers
that you plug into SFP-compatible I/O modules. The CWDM SFP transceiver uses an LC optical connector
to connect to a 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 SMF cables. CWDM SFP transceivers can transmit and receive optical signals up to 61 miles (100 km)
depending on the quality of the fiber-optic cable used.
CWDM SFP transceivers are color coded to indicate their designated optical wavelength. The following figure
shows the CWDM transceiver, which looks like a standard 1000BASE-X SFP transceiver with a colored
arrow and bail clasp to indicate the designated wavelength.
Figure 33: CWDM SFP Transceiver (Yellow Color Code)
1
Colored arrow on label specifies the wavelength
2
Receive optical bore
3
Transmit optical bore
Whenever the transceiver receive optical bores are not filled with optical cables, you should minimize the
chance of contamination by plugging the transceiver with its dust plug.
For the specifications that differentiate the 1000BASE-CWDM SFP transceivers, see the Cisco Gigabit
Ethernet Transceiver Modules Compatibility Matrix. For specifications and installation information that apply
to all CWDM SFP transceivers, see the Cisco SFP and SFP+ Transceiver Module Installation Notes.
1000BASE-DWDM SFP Transceiver Specifications
The Dense Wavelength Division Multiplexing (DWDM) SFP transceivers are part of a DWDM optical network
to provide high-capacity bandwidth across a fiber-optic network. There are 40 fixed-wavelength DWDM SFP
transceivers that support the International Telecommunications Union (ITU) 100-GHz wavelength grid. These
Cisco Nexus 7706 Hardware Installation Guide
108
4
Bail clasp
5
Dust plug
Switch Specifications
OL-31330-01
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