Is the answer ABC or D can simultaneously amplify signals

** Is the answer A,B,C or D **

_____ can simultaneously amplify signals on multiple channels, extending successful communication distances to over 800 kilometers, and reducing or eliminating the requirement for expensive regeneration equipment.

A. SOAs

B. DWDMs

C. EDFAs

D. HIPs

Solution

The Dense Wave Length Division multiplexing (DWDMs)can simultaneously amplify signals on multiple channels, extending successful communication distances to over 800 kilometers, and reducing or eliminating the requirement for expensive regeneration equipment.