Know more about Dispersion Compensation Module (DCM)

Nov 03, 2020

Leave a message

What information should be submitted to locate the accurate DCM? 

Compensated length, utilized position and insertion loss  need to be comfirmed. 


For 1G and 10G transmission rate, does the dispersion need to be considered? 

If your transmission rate is 1G, DCM will not be required. When transmission rate is 10G rate (Whether it is pure 10G rate signal or 1G & 10G mixed rate signal), DCM is required. Additionally, dispersion is also effected by fiber type. For example, the dispersion coefficient of G.652 fiber is 17ps/(nm*km), and G.655 fiber is 4.5ps/(nm*km). 


Is it possible to choose other compensating distance? 

Yes, we can provide you a variety of customized products, including different compensation lengths (10km~140km), different technology types (DCF and Gires-Tournois), different connectors (LC/SC/FC, UPC/APC polish) as well as 1U 19" rack mount.


What should I pay attention to when deploying a DCM? 

You need to notice the utilized position of its application, including pre-, link- and post-compensation. But you'd better limit the pre-compensation length winthin 40km, and make sure the link- and post-compensation length don't exceed 100km. 

Send Inquiry