Back to Search
Start Over
A Dual-Wavelength Scheme for Brillouin Temperature Sensing in Optically Heated Co2+-Doped Fibers
A Dual-Wavelength Scheme for Brillouin Temperature Sensing in Optically Heated Co2+-Doped Fibers
- Source :
- IEEE Sensors Journal. 20:1349-1354
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- In this paper, we propose the use of a dual wavelength scheme for active distributed temperature sensing based on Co2+-doped fibers. A Brillouin Optical Frequency-Domain Analysis (BOFDA) set-up, operating at 850 nm, is used to detect the temperature changes along Co2+-doped optical fibers with various absorption coefficients, while optical heating is performed through a 1550-nm optical pump. A simple model describing optical heating along the Co2+-doped fiber is introduced and experimentally validated. As a proof of concept, we demonstrate that the sensor is capable to distinguish a 1-m portion of fiber immersed into water, from a section of equal length surrounded by air.
- Subjects :
- Optical fiber
Materials science
Temperature sensing
business.industry
010401 analytical chemistry
Doping
Physics::Optics
01 natural sciences
0104 chemical sciences
law.invention
Optical pumping
Brillouin zone
law
Optoelectronics
Dual wavelength
Fiber
Electrical and Electronic Engineering
Absorption (electromagnetic radiation)
business
Instrumentation
Subjects
Details
- ISSN :
- 23799153 and 1530437X
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- IEEE Sensors Journal
- Accession number :
- edsair.doi...........c9220a117c519162c5275af51b3a23d9
- Full Text :
- https://doi.org/10.1109/jsen.2019.2948298