Systems and methods to reduce acoustic noise in fiber optic based sensor systems
US11268834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Jun 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosed embodiments include an acoustic noise reduction device. In one embodiment, the device includes a first sensor operable to detect a first acoustic noise signal and a desired signal and to modulate a first plurality of optical signals in response to detecting at least one of the first acoustic noise signal and the desired signal. The device also includes a second sensor operable to detect a second acoustic noise signal and modulate a second plurality of optical signals in response to detecting the second acoustic noise signal. The device further includes a coupler that is connected to the first and second sensors, where components of the modulated first and second plurality of optical signals approximately cancel each other out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.