Temperature sensing based on multimode interference in polymer optical fibers: sensitivity enhancement by PC-APC connections

Abstract A simple, stable, and high-sensitivity temperature sensor based on multimode interference in a polymer optical fiber (POF) with higher-order mode excitation has been developed. In a single-mode–multimode–single-mode (SMS) structure, one end of the multimode POF with physical-contact (PC) co...

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Bibliographic Details
Published in:	Japanese Journal of Applied Physics Vol. 61; no. 11; pp. 118001 - 118003
Main Authors:	Wang, Kun, Mizuno, Yosuke, Kishizawa, Kazuya, Toyoda, Yuma, Lee, Heeyoung, Ichige, Koichi, Kurz, Wolfgang, Dong, Xingchen, Jakobi, Martin, Koch, Alexander W.
Format:	Journal Article
Language:	English
Published:	Tokyo IOP Publishing 01-11-2022 Japanese Journal of Applied Physics
Subjects:	Connectors Interference multimode interference Optical fibers polymer optical fiber Polymers Sensitivity enhancement temperature sensing Temperature sensors
Online Access:	Get full text
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Summary:	Abstract A simple, stable, and high-sensitivity temperature sensor based on multimode interference in a polymer optical fiber (POF) with higher-order mode excitation has been developed. In a single-mode–multimode–single-mode (SMS) structure, one end of the multimode POF with physical-contact (PC) connectors is connected to a silica single-mode fiber with an angled-PC (APC) connector. We compare the temperature sensing characteristics of the three configurations (no PC-APC, PC-APC at input, and PC-APC at output) and obtain the highest temperature sensitivity of 219.2 pm °C −1 , which is more than double the value of the standard (no PC-APC) SMS structure.
Bibliography:	JJAP-104648.R1
ISSN:	0021-4922 1347-4065
DOI:	10.35848/1347-4065/ac9810