CWDM OADM (Coarse Wavelength Division Multiplexing Optical Add/Drop Module) is passive device to multiplex/demultiplex or add/drop wavelengths from multiple fibers onto one optical fiber. By making use of CWDM technology, individual channels could be optically added or dropped from the fiber pair while allowing pass-through people to continue unobstructed through the bus or ring.

Key Features:
Add/drop ITU-T G.695- and G.694.2-compatible CWDM channels onto a fiber pair;
Suitable for use in outside-plant fiber splice enclosures;
Upgradeable to 8 channels per fiber;
Provides low-loss pass-through for CWDM channels;
Thermally stable passive optics require no electrical power.

The CWDM OADM splice packs are a member of a family group of flexible, low-cost solutions that expand the capacity of existing fiber. CWDM OADM bidirectional splice packs provide both east and west add/drop functionality and they are readily deployed in existing outside plant splice enclosures. They supply ample room for fiber management and splice holders. The OADM connectors are interfaced to the color-matching CWDM GBICs around the equipment side. All the modules are similar size.

Structure
OADM includes three stages: an optical demultiplexer, an optical multiplexer, and together a technique for reconfiguring the paths between your optical demultiplexer, the optical multiplexer plus a pair of ports for adding and dropping signals. The optical demultiplexer separates wavelengths in a input fiber onto ports. The optical multiplexer multiplexes the wavelength channels which are to continue on from demultipexer ports with those through the add ports, onto one particular output fiber.

You will find four a variety of CWDM OADMs:

Dual Single-Channel OADMs (CWDM-MUX-AD-xxxx?aAllows you to definitely add/drop two channels of the wavelength in the two directions associated with an optical ring. Another wavelengths are undergone the OADM. Dual fiber is utilized for both the network along with the CWDM GBIC connections. Eight versions of this OADM can be obtained, one for each wavelength associated with. The twin single-channel OADMs are color coded and match the colour coding in the CWDM GBICs.

4 channel CWDM OADM (CWDM-MUX-4=)?aAllows you to definitely add/drop four channels (with some other wavelengths) into one direction of an optical ring. The other wavelengths are undergone the OADM. Dual fiber is utilized for both the network along with the GBIC connections. Some wavelengths are set to 1470 nm, 1510 nm, 1550 nm, and 1590 nm.

8-Channel Multiplexer/Demultiplexer (CWDM-MUX-8=)?aAllows you to multiplex/demultiplex eight separate channels into one couple of fiber. Dual fiber is used for both the network as well as 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/Demultiplexer (CWDM-MUX-4-SFx=)?aAllows you to multiplex/demultiplex four separate channels into one strand of fiber. Dual fiber is utilized for the connections towards the GBICs and single fiber can be used to the network connections. The two models (CWDM-MUX-4-SF1= and CWDM-MUX-4-SF2=) can be used together to generate a four-channel single-fiber point-to-point link.

CWDM OADM is simply one in the CWDM passive optical system, another are CWDM MUX/DEMUX and CWDM GBIC. They offer optical networking support for high-speed data communication for metropolitan area networks (MANs) over the grid of eight CWDM optical wavelengths both in ring or point-to-point configurations.