Cisco CWDM-OADM4-1

The Cisco CWDM passive optical system provides optical networking support for high-speed data communication for metropolitan area networks (MANs) over a grid of eight CWDM optical wavelengths in both ring configurations or point-to-point configurations.

The Cisco CWDM passive optical system includes these components:

•2-slot chassis for Cisco Optical Add/Drop Multiplexers (OADMs)

•CWDM OADMs

–8-channel multiplexer/demultiplexer

–Two 4-channel OADMs

–Eight dual single-channel OADMs

•1300 nm/1550 nm WDM splitter cable

•CWDM GBIC and CWDM SFP transceivers

 

CWDM 2-Slot Chassis

The CWDM 2-slot chassis (CWDM-CHASSIS-2) is a standard 19-inch chassis that is one rack unit (RU) in height. Each CWDM 2-slot chassis can hold two CWDM OADM modules. You can install the CWDM 2-slot chassis in the same equipment rack as your system or in an adjacent rack so that you can connect the OADMs to the CWDM GBIC transceivers or the CWDM SFP transceivers.

 

CWDM OADMs

The CWDM OADMs are passive devices that can multiplex/demultiplex or add/drop wavelengths from multiple fibers onto one optical fiber. The OADM connectors are interfaced to the color-matching CWDM GBIC or CWDM SFP transceivers on the equipment side. All OADMs are the same size. Two OADM modules can be installed in a CWDM 2-slot chassis (CWDM-CHASSIS-2). There are three different types of CWDM OADM modules

 

8-Channel Multiplexer/Demultiplexer (CWDM-MUX-8A=)

The 8-Channel Multiplexer/Demultiplexer (CWDM-MUX-8A=) allows you to multiplex/demultiplex eight separate channels into one pair of fiber. Dual fiber is used for both the network connection and the CWDM GBIC or CWDM SFP transceiver connections. The eight available wavelengths are 1470-nm, 1490-nm, 1510-nm, 1530-nm, 1550-nm, 1570-nm, 1590-nm, and 1610-nm. The multiplexer/demultiplexer, shown in Figure 1, is equipped with a monitor port that allows you to attach a power meter or an optical spectrum analyzer to assist you in monitoring and troubleshooting the network.

 

Figure 1 8-Channel Multiplexer/Demultiplexer (CWDM-MUX8) Front Panel

 

4-Channel OADM (CWDM-OADM4-1= and CWDM-OADM4-2=)

The 4-Channel OADM (CWDM-OADM4-1= and CWDM-OADM4-2=) allows you to add/drop four channels (with different wavelengths) into one direction of an optical ring. The other wavelengths are passed through the OADM. The 4-channel OADMs are transparent to the 1300-nm wavelength and includes a 1300-nm/1500-nm filter to mix legacy SONET/SDH/ATM ring installations with CWDM installations on the same optical fiber. Dual fiber is used for both the network and the GBIC or SFP connections. The two 4-channel OADMs, shown in Figure 2 and Figure 3, support the following wavelengths:

•CWDM-OADM4-1—1470-nm, 1490-nm, 1510-nm, and 1530-nm.

•CWDM-OADM4-2—1550-nm, 1570-nm, 1590-nm, and 1610-nm.

The 4-channel OADM modules are equipped with a monitor port that allows you to attach a power meter or an optical spectrum analyzer to assist you in monitoring and troubleshooting the network.