Optical modulator
US6950218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2004 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jun 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/225
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention has an object to provide a Mach-Zehnder optical modulator with the excellent productivity and reliability, which can obtain a favorable optical response characteristic even if a high frequency electric signal is applied to a signal electrode. To this end, the present optical modulator is configured such that, in a Mach-Zehnder optical modulator in which an optical waveguide and a coplanar electrode are formed on a surface of a substrate having an electro-optic effect, floating electrodes formed using a conducting material, are provided on side faces along parallel waveguides, among side faces substantially perpendicular to the surface of the substrate. Thus, even when a high frequency electric signal is applied to the signal electrode, a phenomenon is suppressed in which a particular frequency resonates within the substrate, and an occurrence of dip in a particular frequency is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.