Whether DCM modules are required on OAU boards or other boards that support dispersion compensation on a 40G or 100G transmission network

A 40G/100G ePDM-BPSK system is a type of coherent transmission system. DSP chips are configured at the receive end of the system to compensate for electrical-layer PMD and CD.
In a 40G DQPSK or another type of coherent system, DCM modules are still required to suppress the PMD and CD. In such as system, you can install a DCM module between the TDC and RDC ports of an OAU board. You can also use DCU boards to suppress the link dispersion.

Scroll to top