Patents
US 12199130 B2: Apparatus for integrated microwave photonics on a sapphire platform, method of forming same, and applications of same
- Granted
- 2025-01-14
- Filed
- 2021-10-25 application 17509635
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An integrated microwave photonics (IMWP) apparatus is provided using sapphire as a platform. The IMWP apparatus includes: a sapphire substrate having a step-terrace surface; and a III-V stack layer epitaxially grown on the sapphire substrate. The III-V stack layer includes: a first III-V layer disposed on the sapphire substrate; a low temperature (LT) III-V buffer layer disposed on the first III-V layer; multiple second III-V layers disposed and stacked on the LT III-V buffer layer; a third III-V layer disposed on the second III-V layers; a III-V quantum well layer disposed on the third III-V layers; and a fourth III-V layer disposed on the III-V quantum well layer. The second III-V layers are respectively annealed. A growth temperature of the LT III-V layer and a growth temperature of the III-V quantum well layer are lower than a growth temperature of each of the first, second, third and fourth III-V layers.
Source: PVGPATDIS, file of 2026-04-10 (ipg250114.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Board of Trustees of the University of Arkansas 267 patents | US company or organization | Little Rock, AR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Shui-Qing Yu | Fayetteville, AR | 4 | PVGPATDIS, file of 2026-04-10 | |
| Gregory J. Salamo | Fayetteville, AR | 2 | PVGPATDIS, file of 2026-04-10 | |
| Rahul Kumar | Fayetteville, AR | 7 | PVGPATDIS, file of 2026-04-10 | |
| Samir K. Saha | Fayetteville, AR | 1 | PVGPATDIS, file of 2026-04-10 | |
| Yang Zhang | Fayetteville, AR | 705 | PVGPATDIS, file of 2026-04-10 | |
| Samir El-Ghazaly | Fayetteville, AR | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01L | Semiconductor devices not covered by class h10 | H01L21/02631 | PVGPATDIS, file of 2026-04-10 |
| H10F | Inorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation | H10F39/189 | PVGPATDIS, file of 2026-04-10 |
| H10P | Generic processes or apparatus for the manufacture or treatment of devices covered by class h10 | H10P14/22 | PVGPATDIS, file of 2026-04-10 |
| G02B | Optical elements, systems or apparatus | G02B6/102 | 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 |
|---|---|---|---|---|---|
| 2021-10-29 | Assignment Assignment of assignor's interest | SALAMO, GREGORY J. signed 2021-10-18 KUMAR, RAHUL signed 2021-10-19 ZHANG, YANG signed 2021-10-20 YU, SHUI-QING signed 2021-10-22 EL-GHAZALY, SAMIR M. signed 2021-10-25 SAHA, SAMIR K. signed 2021-10-28 | BOARD OF TRUSTEES OF THE UNIVERSITY OF ARKANSAS LITTLE ROCK, AR | 57975/473 | 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.