Home of RF and Wireless Vendors and Resources

One Stop For Your RF and Wireless Need

What is ROADM | Reconfigurable Optical Add Drop MUX in fiber

This page explains basic function of ROADM in fiber optic system.

As we know Optical Add Drop Multiplexer is used to combine or multiplex optical signals of different wavelengths. It is referred by its short form OADM. The same device can be used to remove or separate the optical signal from the optical input multiplexed signal.
Refer Optical ADM for more information.


The full form of ROADM is Reconfigurable Optical Add Drop MUX. It has function opposite to the fixed OADM mentioned above.

ROADM allows operators to change the wavelength of input and output optical signals of a optical switch or node.

Following are the advantages of the ROADM:
• The wavelength can be changed remotely.
• It reduces time during maintenance.
• It reduces labor cost
• It requires minimal optical equipments to change the optical network.

Fiber Optic Network and Optical Components Related Links

DWDM system basics   Fibre optic communication   What is PDMA?   What is WDM?  SONET SDH tutorial   SDH Networks   SDH Frame structure   SDH Modulation   PDH Frame structure   Optical Components  Optical Isolator   Optical Circulator   Optical Amplifier   Optical Filter   Optical Coupler   Optical MUX DEMUX   Optical Equalizer   Optical Switch   Wavelength converter  

What is Difference between

PDH vs SDH  SONET versus SDH   CAS vs CCS  Types of WDM   Single vs multimode fiber  

RF and Wireless Terminologies

Share this page

Translate this page