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1-Gb SFP Transceivers
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 38: 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 Cisco CWDM SFP transceiver cable specifications, see the following table.
Transceiver
Type
CWDM-SFP-1470
CWDM-SFP-1490
CWDM-SFP-1510
CWDM-SFP-1530
CWDM-SFP-1550
CWDM-SFP-1570
CWDM-SFP-1590
CWDM-SFP-1610
Cisco Nexus 7718 Switch Site Preparation and Hardware Installation Guide
168
Cable Type
Connector
Wavelength
Type
(nm)
10
SMF
Dual
1470, 1490,
LC/PC
1510, 1530,
connector
1550, 1570,
1590, 1610
4
Bail clasp
5
Dust plug
Core Size
Modal
(microns)
Bandwidth
(MHz-km)
11
G.652
—
Switch Specifications
Maximum Cable
Distance
62 miles (100 km)
OL-30453-01
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