Achromatic optical modulators
US6169624A · kind A · utility
60Cited by
1References
31Claims
0Family size
Inventors
Key dates
| Filing date | Aug 11, 1999 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Aug 11, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Micromachined grating modulators which exhibit achromatic behavior are described. One embodiment includes narrow and wide ribbons suspended above a substrate and alternatingly interleaved with each other. Narrow and wide reflective surfaces are formed on the narrow and wide ribbons. Compensating reflective surfaces are formed in the gaps between and beneath the ribbons. The width of the ribbons as well as the width of the gaps and the compensating reflecting surfaces are designed so that incident optical beam can be modulated or attenuated in an achromatic fashion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.