CWDM OADMs for the CWDM Passive Optical System
The Following is example of CWDM Passive Optical System
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 or point-to-point configurations.
The CWDMpassive optical system includes the following components:
- 2-slot chassis for Optical Add/Drop Multiplexers (OADMs)
- CWDM OADMs
- Dual single-channel OADMs
- 4-channel OADM
- 8-channel multiplexer/demultiplexer
- Single fiber 4-channel multiplexer/demultiplexers
- CWDM GBIC
CWDM 2-Slot Chassis
The CWDM 2-slot chassis 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 GBICs.
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 GBICs on the equipment side. All the modules are the same size. The CWDM 2-slot chassis allows you to rack mount up to two CWDM OADMs in a single rack unit. There are four different types of CWDM OADMs:
Dual single-channel OADMs
Dual Single-Channel OADMs Allows you to add/drop two channels of the same wavelength into the two directions of an optical ring. The other wavelengths are passed through the OADM. Dual fiber is used for both the network and the CWDM GBIC connections. Eight versions of this OADM are available, one for each wavelength of light. The dual single-channel OADMs are color coded and match the color coding of the CWDM
Dual Single-Channel OADMs Allows you to add/drop two channels of the same wavelength into the two directions of an optical ring. The other wavelengths are passed through the OADM. Dual fiber is used for both the network and the CWDM GBIC connections. Eight versions of this OADM are available, one for each wavelength of light. The dual single-channel OADMs are color coded and match the color coding of the CWDM
4-channel OADM
4-Channel OADM (CWDM-MUX-4=)—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. Dual fiber is used for both the network and the GBIC connections. The four wavelengths are set to 1470 nm, 1510 nm, 1550 nm, and 1590 nm.
8-channel multiplexer/demultiplexer
8-Channel CWDM Multiplexer/Demultiplexer (CWDM-MUX-8=)—Allows you to multiplex/demultiplex eight separate channels into one pair of fiber. Dual fiber is used for both the network and the GBIC connections. The eight available wavelengths are 1470 nm, 1490 nm, 1510 nm, 15300 nm, 1550 nm, 1570 nm, 1590 nm, and 1610 nm.
Single fiber 4-channel multiplexer/demultiplexers
Single-Fiber 4-ChannelCWDM Multiplexer/Demultiplexer (CWDM-MUX-4-SFx=)—Allows you to multiplex/demultiplex four separate channels into one strand of fiber. Dual fiber is used for the connections to the GBICs and single fiber is used for the network connections. The two models (CWDM-MUX-4-SF1= and CWDM-MUX-4-SF2=) must be used together to create a four-channel single-fiber point-to-point link. This module uses the same CWDM GBICs as all of the other CWDM
CWDM GBICs
A CWDM GBIC is a hot-swappable input/output device that links your switching module to the CWDM passive optical system using a pair of single-mode fiber-optic cables. You can connect your multiplexed/demultiplexed wavelengths and added/dropped channels to CWDM GBICs that are installed in your system.
CWDM GBICs are available in eight wavelengths. Each GBIC is color coded to match the connector colors on the OADM modules.
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