TY - JOUR
T1 - Core diameter and numerical aperture dependences on the performance of fiber-optic multimode interference sensing
AU - Wang, Kun
AU - Mizuno, Yosuke
AU - Su, Xingyu
AU - Dong, Xingchen
AU - Kurz, Wolfgang
AU - Fink, Maximilian
AU - Lee, Heeyoung
AU - Jakobi, Martin
AU - Koch, Alexander W.
N1 - Funding Information:
The authors would like to thank the China Scholarship Council (CSC) (Grant No. 201808340074) for supporting this work. Y.M. is indebted to the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. 21H04555), and the research grants from the Murata Science Foundation, the Telecommunications Advancement Foundation, the Takahashi Industrial and Economic Research Foundation, the Yazaki Memorial Foundation for Science and Technology, and the Konica Minolta Science and Technology Foundation.
Publisher Copyright:
© 2022 The Japan Society of Applied Physics.
PY - 2023/1
Y1 - 2023/1
N2 - Modal interference in a multimode fiber (MMF) has been utilized to develop simple sensors for various physical parameters. Herein, first, we investigate the dependences of the core diameter and the numerical aperture (NA) of the MMF on the performance of multimode-interference-based strain and temperature sensing. We find that a larger core diameter leads to higher temperature sensitivity but lower strain sensitivity (absolute value) and that higher NA does not influence the temperature sensitivity but results in higher strain sensitivity (absolute value). Subsequently, using the obtained low strain sensitivity, we demonstrate strain-insensitive temperature sensing with a sensitivity of approximately 6.1
AB - Modal interference in a multimode fiber (MMF) has been utilized to develop simple sensors for various physical parameters. Herein, first, we investigate the dependences of the core diameter and the numerical aperture (NA) of the MMF on the performance of multimode-interference-based strain and temperature sensing. We find that a larger core diameter leads to higher temperature sensitivity but lower strain sensitivity (absolute value) and that higher NA does not influence the temperature sensitivity but results in higher strain sensitivity (absolute value). Subsequently, using the obtained low strain sensitivity, we demonstrate strain-insensitive temperature sensing with a sensitivity of approximately 6.1
KW - multimode fiber
KW - multimode interference
KW - optical fiber sensor
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U2 - 10.35848/1882-0786/aca9bc
DO - 10.35848/1882-0786/aca9bc
M3 - Article
AN - SCOPUS:85145261338
SN - 1882-0778
VL - 16
JO - Applied Physics Express
JF - Applied Physics Express
IS - 1
M1 - 012003
ER -