Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/35894
Title: | Simultaneous measurement of displacement and temperature using a balloon-like hybrid fiber sensor |
Author: | Santos, João P. Bierlich, Jörg Kobelke, Jens Ferreira, Marta S. |
Keywords: | Optical Fibers Displacement Temperature Fiber Optic Technology Interferometry Balloon-shaped Fiber Sensor |
Issue Date: | 1-Aug-2022 |
Publisher: | Optica Publishing Group |
Abstract: | A fiber sensor based on a silica capillary in a balloon-like shape for simultaneous measurement of displacement and temperature is proposed and experimentally demonstrated. The sensor is fabricated by splicing a segment of a hollow-core fiber between two single-mode fibers (SMF) and by creating a balloon shape with the capillary at the top-center position. The SMF-capillary-SMF configuration excites an antiresonant (AR) guidance, and the balloon shape enhances the Mach-Zehnder interferometer (MZI). Experimental results show that, for a balloon length of 4.0 cm and a capillary length of 1.2 cm, the AR is insensitive to displacement and its sensitivity to temperature is 14.3 pm/°C, while the MZI has a sensitivity to displacement of 1.68 nm/mm in the range between 0 and 5 mm and a sensitivity to temperature of 28.6 pm/°C, twice the value of the AR. The proposed fiber sensor has only one sensing element in one configuration, which makes it simple to fabricate as well as low cost. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/35894 |
DOI: | 10.1364/OL.465403 |
ISSN: | 0146-9592 |
Appears in Collections: | DFis - Artigos I3N-FSCOSD - Artigos |
Files in This Item:
File | Description | Size | Format | |
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2022_accepted_version_SANTOS_hybrid balloon.pdf | 692.42 kB | Adobe PDF | View/Open |
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