Journal
SENSORS
Volume 20, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/s20082353
Keywords
fiber design and fabrication; multi-material fiber; hybrid fibers; gas sensor; plasma
Funding
- French Government [62243]
- Program IdEx at the University of Bordeaux
- Cluster of excellence LAPHIA
- Aquitaine Region
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Experimental development of a compact optical emission detector based on the assembly of a polymer-metal and a standard silica fiber is presented in this paper. This device is exploited in a proof-of-principle experiment for gas detection application by means of plasma spectroscopy in the visible-Near Infrared spectral region. A multimode fiber (MMF) is associated with a functional hollow dual-electrodes elongated structure fabricated by the direct preform-to-fiber homothetic co-drawing. A potential of 1.5 kV is applied between the two electrodes embedded inside the composite cladding, which generates an atmospheric pressure dc glow discharge at the tip of the fiber bundle. The emitted light is then collected by the MMF for optical diagnostics. Probing of different atmospheres is presented at the end of this study.
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