| 摘要 |
A multiple channel fiber optic mutiplexer, demultiplexer, multiplexer/demultiplexer, and/or add/drop component includes a plurality of Mach-Zehnder (14, 16, 16...20) interferometer units, each unit including a pair of 50/50 fiber optic couplers connected by a pair of Bragg gratings and three functional ports including two multi-channel input/output ports, one single channel input/output port (22), the Bragg gratings being tuned to a wavelength of the single channel input/output port, and input/output ports of adjacent interferometer units being connected to each other by fusion splices in a cascade configuration, the component including a first common input/output connector (21) on a first of said cascaded interferometer units and a second common input/output connector on a last of said cascaded interferometer units, with the second common input/output connector being arranged to permit the addition of add-on multi-channel components.
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