Optical fiber vacuum sensor based on modal interferometer and PDMS coating
Date
2019Author
Version
Acceso abierto / Sarbide irekia
Type
Contribución a congreso / Biltzarrerako ekarpena
Version
Versión aceptada / Onetsi den bertsioa
Project Identifier
ES/1PE/TEC2016-79367 ES/1PE/TEC2016-78047-R
Impact
|
10.1109/SENSORS43011.2019.8956488
Abstract
This work studies the behavior of polydimethylsiloxane (PDMS) as a transducer for optical vacuum pressure measurements. The optical structure chosen for this device is a modal interferometer achieved by splicing a coreless multimode optical fiber between two single mode fibers. Then, an etching process is applied to the obtained device, in order to decrease the diameter of the fiber and increase ...
[++]
This work studies the behavior of polydimethylsiloxane (PDMS) as a transducer for optical vacuum pressure measurements. The optical structure chosen for this device is a modal interferometer achieved by splicing a coreless multimode optical fiber between two single mode fibers. Then, an etching process is applied to the obtained device, in order to decrease the diameter of the fiber and increase the sensitivity. Finally, the fiber is coated by dip-coating with a layer of PDMS, which changes its volume with pressure changes. The device has been studied in the 1x10(-3) mbar to 10 mbar range with a wavelength shift of 4 nm. A maximum sensitivity of 35 nm/mbar was obtained. The simple fabrication process, which can be applied to more sensitive structures, suggest that PDMS can be a good choice for the development of optical fiber vacuum sensors. [--]
Subject
Optical fiber,
Modal interferometer,
Vacuum sensor,
Polydimethylsiloxane,
PDMS
Publisher
IEEE
Published in
2019 IEEE Sensors, Montreal, QC, Canada, 2019, pp. 1-4
Description
Trabajo presentado a la 18th IEEE Sensors Conference. Montreal, 2019
Departament
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Publisher version
Sponsorship
This work was supported by Spanish Agencia Estatal de Investigacion (AEI). Fondo Europeo de Desarrollo Regional (FEDER) (TEC2016-79367-C2-2-R and TEC2016-78047-R).