5-39
Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 5 Ethernet Cards
5.15.3 G1K-4 DWDM and CWDM GBICs
Figure 5-14 GBICs with Clips (left) and with a Handle (right)
5.15.3 G1K-4 DWDM and CWDM GBICs
DWDM (15454-GBIC-xx.x, 15454E-GBIC-xx.x) and CWDM (15454-GBIC-xxxx,
15454E-GBIC-xxxx) GBICs operate in an ONS 15454 G-Series c ard when the card is configured in
Gigabit Ethernet Transponding mode or in Ethernet over SONET mode. DWDM and CWDM GBICs are
both wavelength division multiplexing (WDM) technologies and operate over single-mode fibers with SC
connectors. Cisco CWDM GBIC technology uses a 20 nm wavelength grid and Cisco ONS 15454 DWDM
GBIC technology uses a 1 nm wavelength grid. CTC displays the specific w avelengths of the installed
CWDM or DWDM GB ICs. DWDM wavelengths are spaced closer together and require more precise lasers
than CWDM. The DWDM spectrum allows for optical signal amplification. For more information on
G-Series card transponding mode, refer to the Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card
Software Feature and Configuration Guide.
The DWDM and CWDM GBICs receive across the full 1300 nm and 1500 nm bands, which incl udes all
CWDM, DWDM, LX/LH, ZX wavelengths, but transmit on one specified wavelength. This capability
can be exploited in some of the G-Series transponding modes by receiving wavelengths tha t do not match
the specific transmission wavelength.
Note G1000-4 cards support CWDM and DWDM GBICs. G1K-4 cards with the Comm on Language
Equipment Identification (CLEI) code of WM5IRWPCAA (manufactured after August 2003) support
CWDM and DWDM GBICs. G1K-4 cards manufactured prior to August 2003 do not support CWDM or
DWDM GBICs.
The ONS 15454-supported CWDM GBICs reach up to 100 to 120 km over single -mode fiber and support
eight wavelengths as shown in Table 5-31.
The ONS 15454-supported DWDM GBICs reach up to 100 to 120 km over single-mode fiber and
support 32 different wavelengths in the red and blue bands. Paired with optical a mplifiers, such as the
Cisco ONS 15216, the DWDM GBICs allow maximum unregenerated spans of approximately 300 km
(Table 5-32).
Receiver
Clip
Handle
Transmitter Receiver
Transmitter
51178
Table 5-31 Supported Wavelengths for CWDM GBICs
CWDM GBIC Wavelengths 1470 nm 1490 nm 1510 nm 1530 nm 1550 nm 1570 nm 1590 nm 1610 nm
Corresponding GBIC Colors Gray Violet Blue Green Yellow Orange Red Brown
Band 47 49 51 53 55 57 59 61