Inteleaver

An optical interleaver Demux is a passive device which splits incoming DWDM optical signal into two output streams-odd channels and even channels. An optical interleaver Mux combines two sets of DWDM channels into a composite signal stream in an interleaving way.

For example, optical interleaver takes two multiplexed signals with 100 GHz spacing and interleaves them, creating a denser DWDM signal with channels at 50 GHz spacing. The process can be repeated, creating even denser composite signals with 25 GHz or 12.5 GHz spacing.

W2 interleaver has wide passband and high isolation. It can also be special channel spacing, and any wavelength band.

When used as demux, an interleaver separates multiple wavelength channels into two paths, each containing half of the channels with alternate frequencies and twice the original channel spacing.