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Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology.

Authors :
Dong, Xinran
Du, Haifeng
Sun, Xiaoyan
Duan, Ji'an
Source :
Materials (1996-1944); Sep2018, Vol. 11 Issue 9, p1535, 1p, 1 Diagram, 7 Graphs
Publication Year :
2018

Abstract

We demonstrated a fiber in-line Mach-Zehnder interferometer (MZI) coated with platinum (Pt) for the simultaneous measurement of strain and temperature. The sensor was fabricated by splicing a section of multimode fiber (MMF) between two single mode fibers (SMFs) and the Pt coating was prepared by iron sputtering technology. Fine interference fringes of over 20 dB with a compact size of 20 mm were achieved. The experimental results of the two different resonant dips showed strain sensitivities of −2.06 pm/με and −2.21 pm/με, as well as temperature sensitivities of 55.2 pm/°C and 53.4 pm/°C, respectively. Furthermore, it was found that the Pt coating can improve the strain sensitivity significantly, resulting in an increase of about 54.5%. In addition, the sensor has advantages of easy fabrication, low cost, and high sensitivity, showing great potential for the dual-parameter sensing of strain and temperature. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
19961944
Volume :
11
Issue :
9
Database :
Complementary Index
Journal :
Materials (1996-1944)
Publication Type :
Academic Journal
Accession number :
131986027
Full Text :
https://doi.org/10.3390/ma11091535