Patents
US 12498275 B2: Temperature measurement using fabry-pãƒâ€°rot resonator on end of optical fiber
- Granted
- 2025-12-16
- Filed
- 2023-01-31 application 18162561
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A temperature measurement device includes a Fabry-Pérot resonator constructed of an inorganic optical material on an end of an optical fiber. Light in the optical fiber couples into a cavity of the Fabry-Pérot resonator and resonates at a resonance that varies with temperature of the Fabry-Pérot resonator. A detector receives output light from the Fabry-Pérot resonator and produces a signal indicating a detected resonance. Computing circuitry receives the signal, determines a temperature of the Fabry-Pérot resonator based on the detected resonance and a relationship that correlates the detected resonance with the temperature of the Fabry-Pérot resonator, and outputs a temperature measurement. The cavity may include a channel comprised of a material having a different refractive index than surrounding material. The temperature measurement device may include multiple Fabry-Pérot resonators. The inorganic optical material enables the temperature measurement device to output a temperature measurement that extends to at least 900° C.
Source: PVGPATDIS, file of 2026-04-10 (ipg251216.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Fluke Corporation 660 patents | US company or organization | Everett, WA | FLUKE CORPORATION State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Mohammad Amin Tadayon | Gaithersburg, MD | 10 | PVGPATDIS, file of 2026-04-10 | |
| Robert B. Haines | Phoenix, AZ | 6 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01K | Measuring temperature; measuring quantity of heat; thermally-sensitive elements not otherwise provided for | G01K11/3206 | 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 |
|---|---|---|---|---|---|
| 2023-04-05 | Assignment Assignment of assignor's interest | HAINES, ROBERT B. signed 2023-01-30 TADAYON, MOHAMMAD AMIN signed 2023-01-31 | FLUKE CORPORATION EVERETT, WA | 63231/121 | 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.