Optical modulator, substrate for optical modulator, method of manufacturing optical modulator, and method of manufacturing substrate for optical modulator
US11061261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2019 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Sep 30, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical modulator, a substrate for an optical modulator, a method of manufacturing an optical modulator, and a method of manufacturing a substrate for an optical modulator that can reduce a propagation loss are provided. An optical modulator 1 according to an embodiment includes: a base substrate 10; a waveguide substrate 20 disposed over the base substrate 10 and including an electro-optic effect; a waveguide 23 formed on the waveguide substrate 20 for performing optical modulation; and an electrode 40 configured to apply a voltage to the waveguide 23. Here, the base substrate 10 and the waveguide substrate 20 are made of the same material, the waveguide 23 is formed inside the waveguide substrate 20, and a refractive index of the waveguide substrate 20 is larger than a refractive index of the base substrate 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.