Optical modulator
US11003043B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Feb 24, 2020 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Feb 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical modulator is provided with a ridge-shaped optical waveguide formed of a dielectric thin film having electro-optic effect, a buffer layer covering the optical waveguide, a signal electrode formed on the buffer layer so as to be opposed to the optical waveguide through the buffer layer; a ground electrode formed on the buffer layer together with the signal electrode, and a dielectric film having a higher dielectric constant than air and covering at least a part of exposed surfaces of the signal electrode and ground electrode and exposed surfaces of the buffer layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.