Multiplexer/demutiplexer with flattened spectral response
US6141152A · kind A · utility
21Cited by
16References
61Claims
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Key dates
| Filing date | Jun 18, 1997 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jun 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/12014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A new multiplexer/demultiplexer includes a compound focusing mechanism having adjacent focal points. 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 vicinity 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.