The Cisco CWDM GBIC is a hot-swappable input/output device for the standard GBIC port of a Cisco switch or router that follows IEEE 802.3z. It joins that port to a coarse wavelength division multiplexing fiber network at 1.25 Gbps full duplex, with a 30 dB optical link budget. Eight models cover the eight CWDM wavelengths, and each has its own color code: gray at 1470 nm, violet at 1490, blue at 1510, green at 1530, yellow at 1550, orange at 1570, red at 1590 and brown at 1610. The spare ordering form of each model ends in an equals sign, as in CWDM-GBIC-1470=.
On the network side the GBIC has a duplex SC connector (dual SC/PC). Only patch cords with PC or UPC connectors work with it, and APC patch cords are not supported. Neither the GBIC nor the Cisco CWDM passive multiplexers it feeds need configuration. In a dual-fiber point-to-point link, as many as eight channels share one pair of single-mode fibers. A single-fiber link uses different wavelengths for sending and receiving and passes up to four channels. One Cisco CWDM chassis rack-mounts up to two passive multiplexers or optical add/drop multiplexers (OADMs).
In the Catalyst 6500 family the CWDM GBIC fits the GBIC ports of the WS-X6408A-GBIC, WS-X6416-GBIC, WS-X6516-GBIC, WS-X6516A-GBIC and WS-X6816-GBIC modules, and the Cisco 7600 router supports it from Cisco IOS Release 12.2(33)SRA. The same eight wavelengths also come in SFP form, for example the CWDM-SFP-1470 1470 nm CWDM SFP. For the dense 100 GHz grid, see the Cisco DWDM transceivers and ONS-SC-2G DWDM SFP pages. More optics and cards are in the Cisco interface card category, and the full range is under networking.
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Cisco CWDM GBIC parts we supply
CWDM GBIC transceivers (8)
- CWDM-GBIC-1470: 1000BASE-CWDM GBIC, 1470 nm, gray, dual SC/PC (spare CWDM-GBIC-1470=)
- CWDM-GBIC-1490: 1000BASE-CWDM GBIC, 1490 nm, violet, dual SC/PC
- CWDM-GBIC-1510: 1000BASE-CWDM GBIC, 1510 nm, blue, dual SC/PC
- CWDM-GBIC-1530: 1000BASE-CWDM GBIC, 1530 nm, green, dual SC/PC
- CWDM-GBIC-1550: 1000BASE-CWDM GBIC, 1550 nm, yellow, dual SC/PC
- CWDM-GBIC-1570: 1000BASE-CWDM GBIC, 1570 nm, orange, dual SC/PC
- CWDM-GBIC-1590: 1000BASE-CWDM GBIC, 1590 nm, red, dual SC/PC
- CWDM-GBIC-1610: 1000BASE-CWDM GBIC, 1610 nm, brown, dual SC/PC