Optical device
US-9523872-B2 · Dec 20, 2016 · US
Electro-optic device
US2021103165A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021103165-A1 |
| Application number | US-202016832647-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 27, 2020 |
| Priority date | Mar 29, 2019 |
| Publication date | Apr 8, 2021 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
An electro-optic device is provided with a substrate, an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate, and an electrode that applies an electric field to the optical waveguide. The optical waveguide includes a modulation waveguide provided in an electric field application region applied with the electric field and having a thickness of 1 μm or larger and a bent waveguide provided in a region other than the electric field application region and having a curvature radius of 16 μm or larger and 80 μm or smaller.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electro-optic device comprising: a substrate; an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate; and an electrode that applies an electric field to the optical waveguide, wherein the optical waveguide includes a modulation waveguide provided in an electric field application region applied with the electric field and having a thickness of 1 μm or larger and a bent waveguide provided in a region other than the electric field application region and having a curvature radius of 16 μm or larger and 80 μm or smaller. 2 . The electro-optic device as claimed in claim 1 further has a dummy pattern which is formed of a lithium niobate film with a ridge shape on the substrate and which is disposed in the vicinity of the bent waveguide. 3 . The electro-optic device as claimed in claim 2 , wherein the bent waveguide is connected to the dummy pattern through a slab part. 4 . The electro-optic device as claimed in claim 1 , wherein the optical waveguide includes a Mach-Zehnder optical waveguide. 5 . An electro-optic device comprising: a substrate; an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate; and an electrode that applies an electric field to the optical waveguide, wherein the optical waveguide includes a modulation waveguide provided in an electric field application region applied with the electric field and having a thickness of 1 μm or larger and a bent waveguide provided in a region other than the electric field application region, and a dummy pattern which is formed of the lithium niobate film formed in a ridge shape on the substrate is disposed in the vicinity of the bent waveguide.
Assignees
Inventors
Classifications
Bends, branchings or intersections · CPC title
Modulator · CPC title
Three-dimensional structures · CPC title
Combinations of two or more optical elements · CPC title
- G02F1/0356Primary
controlled by a high-frequency electromagnetic wave component in an electric waveguide structure · CPC title
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- What does patent US2021103165A1 cover?
- An electro-optic device is provided with a substrate, an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate, and an electrode that applies an electric field to the optical waveguide. The optical waveguide includes a modulation waveguide provided in an electric field application region applied with the electric field and having a thickness of 1 μm or larger an…
- Who is the assignee on this patent?
- Tdk Corp, Fujitsu Optical Components Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02F1/0356. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Apr 08 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).