Optical fiber sensor and measuring apparatus using same
US7389009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Oct 15, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/7703
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber sensor enabling simpler detection of a state of an external environment and a measuring apparatus using the same are provided. At a front end of an optical fiber portion 20a for transmitting the light a hetero core having a different diameter from that of a core of the optical fiber portion 20a is melt bonded so as to form a tip type optical fiber sensor 9 having a sensor portion 4 comprised of the hetero core on its front end. An end of the optical fiber portion 20a side of this tip type optical fiber sensor 9 has a light source 1 connected to it. Returned light striking the optical fiber portion 20a from the light source 1 and subjected to interaction with a measurement medium MD at the sensor portion 4 is split by an optical fiber coupler 2 and received at a photodiode or spectrum analyzer 6, thereby an optical fiber sensor measuring apparatus 100 is constructed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.