Optical filtering device
US6208783A · kind A · utility
16Cited by
86References
69Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Mar 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02052
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for filtering light propagating within waveguides, including optical fibers. The device includes an optical filter, a first waveguide section and a second waveguide section positioned between the filter and the first waveguide section. The diameter of the second waveguide section is greater on the end proximate to the optical filter than on the end opposite the optical filter, typically tapering from one end of the second waveguide section to the other. Benefits include reduction of power density, collimation of light for filtering and/or facilitation of optical coupling, and robustness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.