In this part, we will figure out two questions: What is DWDM? What are the components of DWDM networks?
DWDM (Dense Wavelength Division Multiplexing) is an associate extension of optical networking. It can put data signals from different sources together on a single optical fiber pair, with each signal simultaneously carried on its own separate light wavelength. With DWDM, up to 160 wavelengths with a spacing of 0.8/0.4 nm (100 GHz/50 GHz grid) separate wavelengths or channels of data can be transmitted over a single optical fiber.
DWDM Networks Components
Conventionally, for DWDM networks, there are four devices showed as below that are commonly used by IT workers:
Optical transmitters/receivers
DWDM mux/demux filters
Optical add/drop multiplexers (OADMs)
