Optical multiplexing/demultiplexing device having a wavelength dispersive element
US6134359A · kind A · utility
20Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29395
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and device for optical multiplexing or demultiplexing of optical signals. The device has a grating for dispersing an input beam into a plurality of sub-beams which are focused by a simple lens and a GRIN lens on a glass block having a plurality of waveguides embedded therein with a predetermined spacing therebetween. In order to correct for an offset in alignment, e.g. due to ambient temperature changes, between the sub-beams and the waveguides of the block, the latter is mounted to a thermally activated actuator for an controlled angular displacement which is selected to compensate for the offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.