Patents
US 9197030 B2: Few mode rare earth doped optical fibers for optical amplifiers, and amplifiers using such fibers
- Granted
- 2015-11-24
- Filed
- 2013-07-30 application 13954165
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
According to some embodiments a few moded optical fiber includes a glass core structured to provide light amplification at an amplification wavelength and a cladding surrounding the core. According to some embodiments the core of the few moded optical fiber includes a portion that has an average concentration of rare earth dopant which is lower by at least 30%, and preferably by at least 50%, than the average concentration of the rare earth dopant at another portion of the core that is situated further from the core center.
Source: PVGPATDIS, file of 2026-04-10 (ipg151124.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| CORNING INCORPORATED 4,960 patents | US company or organization | Corning, NY | CORNING INCORPORATED Federal lobbying client EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kevin Wallace Bennett | Hammondsport, NY | 39 | PVGPATDIS, file of 2026-04-10 | |
| Konstantin Sergeevich Koreshkov | Saint Petersburg, RU | 2 | PVGPATDIS, file of 2026-04-10 | |
| Andrey Evgenievich Korolev | Saint Petersburg, RU | 3 | PVGPATDIS, file of 2026-04-10 | |
| Dmitri Vladislavovich Kuksenkov | Elmira, NY | 32 | PVGPATDIS, file of 2026-04-10 | |
| Ming-Jun Li | Horseheads, NY | 288 | PVGPATDIS, file of 2026-04-10 | |
| Vladimir Nikolaevich Nazarov | Saint Petersburg, RU | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01S | Devices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light; devices using stimulated emission of electromagnetic radiation in wave ranges other than optical | H01S3/06754 | PVGPATDIS, file of 2026-04-10 |
| G02B | Optical elements, systems or apparatus | G02B6/02 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2013-07-30 | Assignment Assignment of assignor's interest | KOROLEV, ANDREY EVGENIEVICH signed 2013-07-22 NAZAROV, VLADIMIR NIKOLAEVICH signed 2013-07-23 LI, MING-JUN signed 2013-07-24 BENNETT, KEVIN WALLACE signed 2013-07-25 KUKSENKOV, DMITRI VLADISLAVOVICH signed 2013-07-26 KORESHKOV, KONSTANTIN SERGEEVICH signed 2013-07-29 | CORNING INCORPORATED CORNING, NY | 30905/203 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.