Electro-optic attenuated total internal reflection modulator and method
US5155617A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Jun 13, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Method and apparatus for electro-optically modulating the intensity of an incident light beam including a coupling prism with a high reflective index, a semiconductor substrate in optical contact with the coupling prism and having a conductive area formed therein, an organic electro-optic film formed on the substrate and covering at least a portion of the conductive area, and a transmission line disposed above the electro-optic film and cooperating with the conductive area to form electrodes for use in applying an electric field across the electro-optic film. Light directed through the substrate by the coupling prism couples with surface plasmons at the film-to-metal interface and is selectively reflected or absorbed depending upon whether or not an electric field is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.