Multiplexer/demultiplexer with flattened spectral response
A new multiplexer/demultiplexer (50) includes a compound focusing mechanism having adjacent focal points (F1,F2). Multiple images of one or more input pathways for each different wavelength signal are projected onto one or more output pathways. The resulting spectral response is flattened in the vac...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A new multiplexer/demultiplexer (50) includes a compound focusing mechanism having adjacent focal points (F1,F2). Multiple images of one or more input pathways for each different wavelength signal are projected onto one or more output pathways. The resulting spectral response is flattened in the vacinity of the center wavelength of each different wavelength signal. The number and spacing of the focal points, as well as the mode field radii of the input and output pathways, can be optimized for desired combinations of channel bandwidth, insertion loss, and crosstalk. |
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