Optical modulator
US-9568801-B2 · Feb 14, 2017 · US
Optical modulator
US10303036B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10303036-B2 |
| Application number | US-201715647719-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 12, 2017 |
| Priority date | Sep 20, 2016 |
| Publication date | May 28, 2019 |
| Grant date | May 28, 2019 |
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Abstract
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An optical modulator includes a substrate and an optical waveguide group. The optical waveguide group includes a pair of relay optical waveguides, a pair of first Mach-Zehnder type optical waveguides, and a pair of second Mach-Zehnder type optical waveguides. The pair of the first Mach-Zehnder type optical waveguides are connected to the pair of the relay optical waveguides and includes input ends arranged at positions that deviate from each other in a longitudinal direction of the substrate. The pair of the second Mach-Zehnder type optical waveguides are provided on a pair of branched waveguides of each of the first Mach-Zehnder type optical waveguides and includes input ends arranged at symmetric positions with respect to a straight line that passes through an input end serving as a branch point of the branched waveguides and that extends in the longitudinal direction of the substrate.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical modulator comprising: a substrate; and an optical waveguide group provided on the substrate, wherein the optical waveguide group includes a pair of relay optical waveguides that branch from an optical waveguide for inputting light; a pair of first Mach-Zehnder type optical waveguides that include input ends, each of the input ends serving as a branch point of a pair of branched waveguides, connected to the pair of the relay optical waveguides and arranged at positions that deviate from each other in a longitudinal direction of the substrate; and a pair of second Mach-Zehnder type optical waveguides that are provided on the pair of branched waveguides of each of the first Mach-Zehnder type optical waveguides and include input ends arranged at symmetric positions with respect to a straight line that passes through an input end serving as the branch point of the pair of branched waveguides and that extends in the longitudinal direction of the substrate. 2. The optical modulator according to claim 1 , wherein output ends of the pair of the second Mach-Zehnder type optical waveguides are arranged at symmetric positions with respect to the straight line. 3. The optical modulator according to claim 1 , wherein the pair of the branched waveguides of the first Mach-Zehnder type optical waveguides are arranged at symmetric positions with respect to the straight line.
Assignees
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Classifications
- G02F1/225Primary
in an optical waveguide structure · CPC title
integrated waveguide · CPC title
Physics · mapped topic
Mach-Zehnder type · CPC title
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Frequently asked questions
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- What does patent US10303036B2 cover?
- An optical modulator includes a substrate and an optical waveguide group. The optical waveguide group includes a pair of relay optical waveguides, a pair of first Mach-Zehnder type optical waveguides, and a pair of second Mach-Zehnder type optical waveguides. The pair of the first Mach-Zehnder type optical waveguides are connected to the pair of the relay optical waveguides and includes input e…
- Who is the assignee on this patent?
- Fujitsu Optical Components Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02F1/225. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 28 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).