Polarization independent grating modulator
US6501600B1 · kind B1 · utility
6Cited by
29References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2000 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Apr 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fiber-optic modulator based on a micromachined grating device which is both polarization independent and achromatic in behavior is described. The device is a two dimensional grating or periodic structure which is symmetric in the X and Y axes. It is comprised of a membrane with holes cut in it that moves downward with the application of a voltage which starts diffracting light. The hole region may have a raised island to provide achromatic behavior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.