Thermal refractive materials for optical sensor application
US5052820A · kind A · utility
56Cited by
14References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1989 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Aug 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S252/962
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Improved thermooptical sensing devices are provided wherein at various predetermined sectons of an optical fiber is juxtaposed a material characterized by a temperature dependent index of refraction. This material forms a temperature sensitive area which controls the transmission of light through the optical fiber thereby allowing detection of temperature changes along the fiber. The materials may be crystalline thermoplastic polymers, modified organic polymers containing inorganic modifiers, polymer systems containing discrete phases of organic polymers and inorganic additives or thermochromic inorganic compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.