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Optical interleaver
An optical interleaver is a 3-port passive fiber-optic device that is used to combine two sets of dense wavelength-division multiplexing (DWDM) channels (odd and even channels) into a composite signal stream in an interleaving way. For example, optical interleaver takes two multiplexed signals with 100Â GHz spacing and interleaves them, creating a denser DWDM signal with channels spaced 50Â GHz apart.
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