Photonic circuit device with reduced losses caused by electrical contact pads
US-2015380905-A1 · Dec 31, 2015 · US
External resonator-type semiconductor laser element and optical element
US9020004B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9020004-B2 |
| Application number | US-201414154279-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 14, 2014 |
| Priority date | Aug 10, 2011 |
| Publication date | Apr 28, 2015 |
| Grant date | Apr 28, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A ring resonator is connected to an optical amplifier. The ring resonator and optical amplifier are contained within the optical path of an optical resonator formed by a first and second reflector. The optical coupler branches part of the light conducting from the optical amplifier to the ring resonator within the optical resonator off to an output optical waveguide.
First claim
Opening claim text (preview).
The invention claimed is: 1. An external resonator-type semiconductor laser element, comprising: an optical amplifier; a ring resonator optically connected to the optical amplifier; a first and second reflector constituting an optical resonator that contains the ring resonator and optical amplifier within its optical path; an output optical waveguide; and an optical coupler that branches part of a light conducting from the optical amplifier to the ring resonator within the…
Assignees
Inventors
Classifications
Physics · mapped topic
- H01S5/1032Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Physics · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9020004B2 cover?
- A ring resonator is connected to an optical amplifier. The ring resonator and optical amplifier are contained within the optical path of an optical resonator formed by a first and second reflector. The optical coupler branches part of the light conducting from the optical amplifier to the ring resonator within the optical resonator off to an output optical waveguide.
- Who is the assignee on this patent?
- Fujitsu Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01S5/1032. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 28 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).