What are the Functions of Ports of CWDM MUX/DEMUX?

It's typical to utilize CWDM or DWDM to expand an existing fiber-optic network without installing new fibers. When building a CWDM or DWDM network, it is crucial to use WDM MUX/DEMUX.

A CWDM and DWDM MUX/DEMUX have different ports for fiber optic networks to make them more beneficial. Here we will discuss the functions of ports on CWDM MUX/DEMUX.

What is Coarse Wavelength Division Multiplexer/Demultiplexer?

CWDM MUX/DEMUX technology is an efficient, low-cost method of expanding fiber capacity. A CWDM multiplexer combines signals, while a demultiplexer separates them.

CWDM MUX/DEMUX supports a wide range of architectures, including point-to-point links and 2-fiber protected rings.

CWDM MUX/DEMUX


The Must-Have Ports on CWDM MUX/DEMUX

The channel port and line port are the most frequent and required ports for the CWDM Multiplexer/Demultiplexer to function efficiently.

1. Line Port

Dual-fiber and single-fiber line ports are available on CWDM MUX/DEMUX. The order of the wavelengths and their uses are completely different.

Each duplex channel port supports the same wavelength on the TX and RX ports for bidirectional transmission across a dual-fiber line port.

On both ends of the network, the CWDM MUX/DEMUX with twin fiber line ports might be the same. However, because a single-fiber line port can only carry data in one way, the transmit and receive ports of duplex channel will support different wavelengths.

In a single-fiber CWDM MUX/DEMUX, the order of the wavelengths must be reversed at both ends.

2. Chanel Port

Generally, a CWDM MUX/DEMUX includes many channel ports on various wavelengths. Each channel port functions with a certain wavelength.

It employs 18 wavelengths that cover 1270nm to 1610nm and has a channel spacing of 20nm. A CWDM multiplexer/demultiplexer usually has two to eight channels that span the 1270nm to 1610nm wavelength range.

 The Functioning Ports on CWDM MUX/DEMUX 

The following are some of the unique ports on CWDM MUX/DEMUX for specific requirements.

1. Expansion Port 

An extension port can extend or add wavelengths or CWDM channels to the network. When a CWDM MUX/DEMUX can't satisfy all wavelength requirements, the expansion port can be used to add more wavelengths by connecting to another CWDM Multiplexer/Demultiplexer line port. However, not every CWDM MUX/DEMUX features extension ports.

2. Monitor Port

The monitor port is utilized for signal assessment and monitoring. A single-fiber CWDM MUX/DEMUX should have a simplex fiber optic port as the monitor port.

You can add a duplex or simplex monitor port to a dual-fiber MUX/DEMUX for the entire network monitoring.

3. 1310nm and 1550nm Port

The 1310nm and 1550nm ports can be used to combine CWDM channels with an existing legacy 1310nm or 1550nm network, enabling the CWDM channels to be superimposed on the same fiber pair as the current 1310nm or 1550nm network.

Furthermore, wavelengths ranging from 0 to 40 nm higher or lower than 1310 nm or 1550 nm are not permitted to be used in the device. 

Conclusion

On CWDM MUX/DEMUX, the must-have ports and the functioning ports each have their own set of features and applications. CWDM Multiplexer/Demultiplexer is undoubtedly a popular technology that may give users cost-effective network upgrades


Location: China

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