Wavelength division multiplexing/demultiplexing devices employing patterned optical components
US6594415B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2938
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improved wavelength division multiplexing/demultiplexing devices are disclosed. In the case of an improved wavelength division multiplexing device having a diffraction grating for combining a plurality of narrowband optical beams into a multiplexed, polychromatic optical beam, wherein the plurality of narrowband optical beams are received from a corresponding plurality of optical sources and the multiplexed, polychromatic optical beam is transmitted to a corresponding optical receiver, the improvement comprises employing a plurality of patterned optical input components corresponding to the plurality of narrowband optical beams and the plurality of optical sources for introducing a first patterned phase delay into the plurality of narrowband optical beams, wherein each of the plurality of patterned optical input components has an effective focal length such that each of the plurality of optical sources is disposed substantially inside the effective focal length of a corresponding one of the plurality of patterned optical input components. The improvement also comprises similarly employing a patterned optical output component for introducing a second patterned phase delay into the m…
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