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Optical waveguide and arrayed waveguide grating
US9075191B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9075191-B2 |
| Application number | US-201113996184-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 26, 2011 |
| Priority date | Dec 22, 2010 |
| Publication date | Jul 7, 2015 |
| Grant date | Jul 7, 2015 |
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Abstract
Official abstract text for this publication.
This optical waveguide is provided with a slab waveguide in which a grating is formed, an arrayed waveguide connected to a position where a constructive interference portion of a self-image of the grating is formed, and a refractive index change region which is formed between the slab waveguide and the arrayed waveguide, in which an average value of a refractive index in a refractive index distribution in a direction substantially vertical to a light propagation direction is averagely increased from the slab waveguide toward the arrayed waveguide, and in which an average value of the refractive index in a refractive index distribution in a direction substantially parallel to the light propagation direction is increased at a central axis of the arrayed waveguide.
First claim
Opening claim text (preview).
The invention claimed is: 1. An optical waveguide comprising: a slab waveguide in which a grating is formed; an arrayed waveguide connected to a position where a constructive interference portion of a self-image of the grating is formed; and a refractive index change region formed between the slab waveguide and the arrayed waveguide, in which an average value of the refractive index in a refractive index distribution in a direction substantially vertical to a light propagation…
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Physics · mapped topic
- G02B6/12014Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9075191B2 cover?
- This optical waveguide is provided with a slab waveguide in which a grating is formed, an arrayed waveguide connected to a position where a constructive interference portion of a self-image of the grating is formed, and a refractive index change region which is formed between the slab waveguide and the arrayed waveguide, in which an average value of a refractive index in a refractive index dist…
- Who is the assignee on this patent?
- Morita Keiichi, Shimizu Kazumi, Kawashima Koji, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G02B6/12014. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 07 2015 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).