Fiber optic transducer and method
US4358678A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1980 |
| Grant date | Nov 9, 1982 |
| Priority date | — |
| Expiry date | Nov 19, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L11/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for detecting and measuring mechanical movement that is directly or indirectly representative of a physical phenomenon. The method and apparatus involve the use of at least one optical fiber that defines a region of bend having a curvature, the radius of which varies in direct relation with the particular mechanical movement that is induced by the physical phenomenon. Light is introduced into one extremity of the optical fiber and propagates through the fiber where the intensity of the light emitted or radiating from the opposite extremity of the fiber is measured. Differentiation between introduced light and emitted light determines the degree of perturbance caused by the region of bend and is thus representative of the physical phenomenon that alters the radius of curvature at the region of bend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.