Compact optical multiplexer/demultiplexer
US6941072B2 · kind B2 · utility
6Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2001 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Sep 24, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0219
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to wavelength division multiplexing (WDM) and demultiplexing of optical signals using optical filters in free space. To minimize dispersion, the present invention uses relatively small angles of incidence. To avoid the need for a large package, the present invention utilizes reflective prisms to steer the reflected beams to provide a lateral shift in the beam path that ensures that the necessary space is provided between the input/output ports. Devices including a single adjustable filter are disclosed, along with devices having a plurality of filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.