Fiber optic temperature sensing
US4417782A · kind A · utility
184Cited by
9References
120Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Fiber optic waveguides exhibiting a blackout phenomenon can be used for temperature sensing. A temperature sensing waveguide can be used in such applications as maintaining a material within a selected temperature range, freeze protection viscosity control of liquids in pipelines, leak detection of cryogenic fluids, fire detection, application of heat-recoverable materials, battery charging, and fluid level detection. Novel waveguides exhibiting blackout at selected temperatures for use in these applications are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.