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
收藏
页码：1989 / 1992
页数：4
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