High Sensitivity of Balloon-Like Bent MMI Fiber Low-Temperature Sensor

被引：19

作者：

Noor, M. Y. Mohd ^{[1
]}

Azmi, A. I. ^{[1
]}

Abdullah, A. S. ^{[1
]}

Supa'at, A. S. Mohd ^{[1
]}

Kassim, N. Mohd ^{[1
]}

Ibrahim, M. H. ^{[1
]}

Ngajikin, N. H. ^{[1
]}

机构：

[1] Univ Teknol Malaysia, Fac Elect Engn, Skudai 81310, Malaysia

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 18期

关键词：

Temperature sensing; multimode interference effect; optical fiber sensor; MULTIMODE-INTERFERENCE; COMPENSATION;

D O I：

10.1109/LPT.2015.2448944

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel low cost and simple temperature sensor based on multimode interference (MMI) is formed by a successive singlemode fiber (SMF)-bent multimode fiber (MMF)-SMF structure. Due to the small curvature radius of bent MMF section mimicking a balloon shape, MMI effect from the core is spreading into coating. The high temperature sensitivity is mainly due to the large thermo-optical coefficient of the existing acrylate coating of the MMF fiber. A temperature sensitivity of up to -2060 pm/degrees C and -25.1 nW/degrees C for wavelength-and intensity-based interrogation, respectively, have been achieved in the range between 27 degrees C and 31 degrees C. This sensor is most suitable in high sensitivity and low-temperature application such as the measurement of human body temperature.

引用

页码：1989 / 1992

页数：4

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