Suppression of high frequency resonance in an electro-optical modulator
US6646776B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Nov 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to apparatus and methods for suppressing high frequency resonance in an electro-optical device. The electro-optical device includes an optical waveguide formed in the upper surface of a substrate. The device further includes a plurality of electrically floating electrode segments that are positioned on the substrate to intensify an electric field in the optical waveguide. The device also includes a plurality of electrically grounded electrode segments that are positioned on the substrate for prohibiting modal conversion and propagation of high order modes in the plurality of electrically grounded electrode segments and in the plurality of electrically floating electrode segments, thereby suppressing modal coupling to the substrate. The device further includes a buffer layer formed on the upper surface of the substrate and a driving electrode formed on an upper surface of the buffer layer for receiving an RF signal that induces the electric field in the optical waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.