Repozytorium publikacji - Politechnika Gdańska

In this paper, we present a fibre-optic sensor for simultaneous measurement of refractive index and thickness of liquid layers. We designed an experimental low-coherence setup with two broadband light sources and an extrinsic fibre-optic Fabry–Pérot interferometer acting as the sensing head. We examined how the refractive index of a liquid film and its thickness affect spectrum at the output of a fibre-optic interferometer. We performed a series of experiments using two light sources and only one sensing head. The spectra were collected in ranges of 1220÷1340 nm and 1500÷1640 nm. The obtained results show that using two spectra recorded simultaneously for two wavelength ranges enables to determine thickness in a range of 50÷500 µm, and refractive index of a liquid film in a range of 1:00÷1:41 RIU using only one sensing head.

Autorzy

• Marcin Marzejon link otwiera się w nowej karcie ,
• dr inż. Katarzyna Karpienko link otwiera się w nowej karcie ,
• dr inż. Adam Mazikowski link otwiera się w nowej karcie ,
• prof. dr hab. inż. Małgorzata Szczerska link otwiera się w nowej karcie