Patent · US Active

In-line fiber sensing, noise cancellation and strain detection

US10731969B2 · kind B2 · utility

2Cited by
3References
9Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 12, 2016
Grant dateAug 4, 2020
Priority date—
Expiry dateMay 12, 2036

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/4298
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An in-line fiber-optic sensing element, a system, and methods for detecting strain using a fiber optic sensor are described that include using at least two chirped grating structures. In an implementation, an in-line fiber-optic sensing element that employs example techniques in accordance with the present disclosure includes an optically transmissive fiber including a core and an outer layer; a Fabry-Perot cavity defined by a portion of the optically transmissive fiber and two chirped fiber-Bragg grating structures, where the two chirped grating structures are separated and are configured to reflect light.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.