CWDM

CWDM stands for Coarse Wavelength Divison Multiplexing.

With this technology you can send up from 4 to 16 different "colors" over a fiber-optical-cable. The edge of CWDM to normal fiber-optical-cable is, that you have a much higher speed and so you can send mutch more data over one cable than with a normal optical-technology. An other difference is the range, the CWDM has a range of over 50km.

CWDM operating mode

At first, you need pro colour a GBIC, a SFP, a XFP or a XENPAK. Then you will connect your optical transceiver with a MUX. This device bunch your signal an send it over one fiberoptic cable to a DEMUX. This device will split the signal in the original state and send it to the optical transceiver back

The difference to DWDM

• cheaper, because the laser are not cooled.
• greater distance between the "colour"
• lower numbers of colours (only 4 til 16, DWDM have up to 80 and theoretically any more colors)
• shorter range

Cisco Supported SFP Optics and Applications

Client Protocol	Bit Rate (Mbps)	Client SFP (Product Number)	CWDM Line SFP (Product Number)	DWDM Line SFP (Product Number)
SONET/SDH	2488	• SFP-OC48-SR • SFP-OC48-IR1 • SFP-OC48-LR2	• CWDM-SFP-1470 • CWDM-SFP-1490 • CWDM-SFP-1510 • CWDM-SFP-1530 • CWDM-SFP-1550 • CWDM-SFP-1570 • CWDM-SFP-1610	32 channels • DWDM-SFP-3033= • DWDM-SFP-3112= - • DWDM-SFP-XXXX= - • DWDM-SFP-5979= • DWDM-SFP-6061=
	622	• SFP-OC12-SR • SFP-OC12-IR1 • SFP-OC12-LR1 • SFP-OC12-LR2 • SFP-OC12-MM	• CWDM-SFP-1470 • CWDM-SFP-1490 • CWDM-SFP-1510 • CWDM-SFP-1530 • CWDM-SFP-1550 • CWDM-SFP-1570 • CWDM-SFP-1610	32 channels • DWDM-SFP-3033= • DWDM-SFP-3112= - • DWDM-SFP-XXXX= - • DWDM-SFP-5979= • DWDM-SFP-6061=
	155	SFP-OC3-SR • SFP-OC3-IR1 • SFP-OC3-LR1 • SFP-OC3-LR2 • SFP-OC3-MM	• ONS-SE-155-1470= • ONS-SE-155-1490= • ONS-SE-155-1510= • ONS-SE-155-1530= • ONS-SE-155-1550= • ONS-SE-155-1570= • ONS-SE-155-1590= • ONS-SE-155-1610=	-
Gigabit Ethernet	1250	• GLC-LH-SM= • GLC-SX-MM= • GLC-ZX-SM= • GLC-BX-D= • GLC-BX-U= • SFP-GE-L= • SFP-GE-S= • SFP-GE-Z=	• CWDM-SFP-1470 • CWDM-SFP-1490 • CWDM-SFP-1510 • CWDM-SFP-1530 • CWDM-SFP-1550 • CWDM-SFP-1570 • CWDM-SFP-1610	32 channels • DWDM-SFP-3033= • DWDM-SFP-3112= - • DWDM-SFP-XXXX= - • DWDM-SFP-5979= • DWDM-SFP-6061=
Fibre Channel	1063	DS-SFP-FC-2G-LW= • ONS-SE-G2F-LX= • DS-SFP-FC-2G-SW= • ONS-SE-G2F-SX=	• CWDM-SFP-1470 • CWDM-SFP-1490 • CWDM-SFP-1510 • CWDM-SFP-1530 • CWDM-SFP-1550 • CWDM-SFP-1570 • CWDM-SFP-1610	32 channels • DWDM-SFP-3033= • DWDM-SFP-3112= - • DWDM-SFP-XXXX= - • DWDM-SFP-5979= • DWDM-SFP-6061=
	2125	• DS-SFP-FC-2G-LW= • ONS-SE-G2F-LX= • DS-SFP-FC-2G-SW= • ONS-SE-G2F-SX=	• CWDM-SFP-1470 • CWDM-SFP-1490 • CWDM-SFP-1510 • CWDM-SFP-1530 • CWDM-SFP-1550 • CWDM-SFP-1570 • CWDM-SFP-1610	32 channels • DWDM-SFP-3033= • DWDM-SFP-3112= - • DWDM-SFP-XXXX= - • DWDM-SFP-5979= • DWDM-SFP-6061=

Cisco CWDM GBIC Product Information

Product Number	Description	Color
CWDM-GBIC-1470	Cisco 1000BASE-CWDM GBIC, 1470 nm	Gray
CWDM-GBIC-1490	Cisco 1000BASE-CWDM GBIC, 1490 nm	Violet
CWDM-GBIC-1510	Cisco 1000BASE-CWDM GBIC, 1510 nm	Blue
CWDM-GBIC-1530	Cisco 1000BASE-CWDM GBIC, 1530 nm	Green
CWDM-GBIC-1550	Cisco 1000BASE-CWDM GBIC, 1550 nm	Yellow
CWDM-GBIC-1570	Cisco 1000BASE-CWDM GBIC, 1570 nm	Orange
CWDM-GBIC-1590	Cisco 1000BASE-CWDM GBIC, 1590 nm	Red
CWDM-GBIC-1610	Cisco 1000BASE-CWDM GBIC, 1610 nm	Brown
CWDM-8GBIC-SET1	Set of four pairs of Cisco 1000BASE-CWDM GBICs	2 gray, blue, yellow, or red
CWDM-8GBIC-SET2	Set of four pairs of Cisco 1000BASE-CWDM GBICs	2 violet, green, orange, or brown

Passive CWDM Devices by Cisco

Product Number	Description
CWDM-CHASSIS-2=	2-slot CWDM chassis
CWDM-MUX4-SF1=	4 channels (1470, 1510, 1550, and 1590) single-fiber multiplexer/demultiplexer to be deployed always in conjunction with CWDM-MUX4-SF2=
CWDM-MUX4-SF2=	4 channels (1490, 1530, 1570, and 1610) single-fiber multiplexer/demultiplexer to be deployed always in conjunction with CWDM-MUX4-SF1=
CWDM-MUX8A=	8-channel (1470, 1490, 1510, 1530, 1550, 1570, 1590, and 1610) multiplexer/demultiplexer with monitor ports and LC connectors (this product replaces CWDM-MUX-8).
CWDM-OADM4-1=	4 channels (1470, 1490, 1510, and 1530) optical add/drop multiplexer (OADM) with monitor ports and LC connectors (this product replaces CWDM-MUX-4=)
CWDM-OADM4-2=	4 channels (1550, 1570, 1590, and 1610) OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-4=)
CWDM-OADM1-1470=	Single-wavelength (1470) dual-channel OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-AD-1470=)
CWDM-OADM1-1490=	Single-wavelength (1490) dual-channel OADM with monitor ports and LC connectors (this product replaces CWDM-MUX-AD-1490=)
CWDM-OADM1-1510=	Single-wavelength (1510) dual-channel OADM with monitor ports and LC connectors (this product replaces CWDM-MUX-AD-1510=)
CWDM-OADM1-1530=	Single-wavelength (1530) dual-channel OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-AD-1530=)
CWDM-OADM1-1550=	Single-wavelength (1550) dual-channel OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-AD-1550=)
CWDM-OADM1-1570=	Single-wavelength (1570) dual-channel OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-AD-1570=)
CWDM-OADM1-1590=	Single-wavelength (1590) dual-channel OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-AD-1590=)
CWDM-OADM1-1610=	Single-wavelength (1610) dual-channel OADM with monitor ports and LC connectors (this product replaces part number CWDM-MUX-AD-1610=)
WDM-1300-1550-S=	Y-cable WDM filter with a 1300-nm port, a CWDM 1550-nm port, and a network port to multiplex or demultiplex 1300-nm channels with CWDM or any 1550-nm channels

download CWDM passifs datasheet