Optical attenuator
US8280218B2 · kind B2 · utility
0Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2009 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Apr 29, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tilting mirror MEMS variable optical attenuator attenuates light over a band of wavelengths with minimum wavelength dependent loss. The attenuator includes a lens that has a wedged input face and is made from a material that has high dispersion. The lens design causes different wavelengths to travel different paths through the attenuator such that wavelength dependent loss is reduced. The attenuator may be designed to have minimum wavelength dependent loss at a specified attenuation greater than zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.