Multi-cavity all-glass interferometric sensor for measuring high pressure and temperature
US10830658B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | May 17, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02309
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for sensing pressure and temperature includes: a hollow glass tube; a first optical fiber having an end disposed into a first end of the tube; a second optical fiber being disposed in a second end of the tube, the second optical fiber having a first solid core section followed by a hollow core section followed by a second solid core section, a first gap formed between the first and second optical fibers, a length of the first solid core section forming a second gap, and a length of the hollow core section forming a third gap; an optical interrogator that transmits light at various wavelengths and measures an intensity of reflected light due to the first gap, second gap, and third gap as a function of frequency to provide interrogation data; and a processor that matches the interrogation data to reference data to estimate the pressure and/or temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.