Optical multiplexor/demultiplexor using a narrow band filter fol

Details Optical multiplexor/demultiplexor using a narrow band filter fol Optical multiplexor/demultiplexor using a narrow band filter fol

1998-02-18

1999-08-24

Spyrou, Cassandra

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359584, 359589, 385 24, H04J 1402, G02B 110, G02B 528

Patent

active

059431490

ABSTRACT:
This invention relates to an optical demultiplexor having a narrow band filter for separating a narrow band channel prior to utilizing one or more wide band filters for separating a plurality of channels into groups of channels. The groups of channels can then be further separated or demultiplexed by a plurality of narrow band filters. Advantageously, a plurality of closely spaced (i.e. 50 Ghz) channels can be separated using conventional dichroic filters.

REFERENCES:
patent: 5629995 (1997-05-01), Duck et al.
patent: 5652814 (1997-07-01), Pan et al.

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