Waveguide structure
US-2016349546-A1 · Dec 1, 2016 · US
Thin-plate LN optical control device
US10359653B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10359653-B2 |
| Application number | US-201715840602-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 13, 2017 |
| Priority date | Dec 14, 2016 |
| Publication date | Jul 23, 2019 |
| Grant date | Jul 23, 2019 |
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Abstract
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A thin-plate LN optical control device includes: a thin-plate LN optical waveguide element which includes an optical waveguide formed by thermal diffusion of Ti in a substrate made of lithium niobate, and a control electrode that is formed on the substrate and is configured to control a light wave propagating through the optical waveguide, and in which at least a part of the substrate is thinned; and a housing that accommodates the thin-plate LN optical waveguide element in an air-tight sealing manner. Oxygen is contained in a filler gas inside the housing.
First claim
Opening claim text (preview).
What is claimed is: 1. A thin-plate LN optical control device comprising: a thin-plate LN optical waveguide element which includes an optical waveguide formed by thermal diffusion of Ti, and a control electrode configured to control a light wave propagating through the optical waveguide in a substrate made of lithium niobate, and in which at least a part of the substrate is thinned; and a housing that accommodates the thin-plate LN optical waveguide element in an air-tight sealing manner, wherein the substrate is thinned by mechanical processing, the thickness of the substrate is 10 μm or less, and oxygen is contained in a filler gas inside the housing. 2. The thin-plate LN optical control device according to claim 1 , wherein a molar concentration of oxygen in the filler gas is 3% or greater. 3. The thin-plate LN optical control device according to claim 1 , wherein in the thin-plate LN optical waveguide element, a ridge is formed in a front surface or a back surface of the substrate. 4. The thin-plate LN optical control device according to claim 1 , wherein the filler gas does not container moisture.
Assignees
Inventors
Classifications
- G02F1/0316Primary
Electrodes · CPC title
in an optical waveguide structure · CPC title
in an optical waveguide structure · CPC title
based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect (G02F1/061 takes precedence) · CPC title
involving an electro-optic TE-TM mode conversion · CPC title
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- What does patent US10359653B2 cover?
- A thin-plate LN optical control device includes: a thin-plate LN optical waveguide element which includes an optical waveguide formed by thermal diffusion of Ti in a substrate made of lithium niobate, and a control electrode that is formed on the substrate and is configured to control a light wave propagating through the optical waveguide, and in which at least a part of the substrate is thinne…
- Who is the assignee on this patent?
- Sumitomo Osaka Cement Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02F1/0316. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 23 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).