期刊
OPTICS COMMUNICATIONS
卷 336, 期 -, 页码 73-76出版社
ELSEVIER
DOI: 10.1016/j.optcom.2014.09.075
关键词
Fiber optic sensor; Sagnac interferometer; Vernier effect; Temperature measurement
类别
资金
- International Science and Technology Cooperation Program of China [2014DFA11170]
- Fundamental Research Fund for the Central Universities [2682014RC22]
- National Natural Science Foundation of China [61475128, 61325023]
- Key Grant Project of Chinese Ministry of Education [313049]
- Key Project of Sichuan Province of China [2011GZ0239]
A novel fiber optic temperature sensor has been proposed and experimentally demonstrated with similar to 9 times sensitivity enhancement by using two cascaded Sagnac interferometers. These two Sagnac interferometers consist of the same type of polarization maintaining fibers with slightly different lengths. The working principle is analogous to a Vernier scale. One interferometer acts as filter, while the other is for temperature sensing. The envelope of the cascaded sensor shifts much more than single one with a certain enhancement factor, which related to the free space range difference between the filter and sensor interferometers. Experimental results show that the temperature sensitivity is enhanced from -1.46 nm/degrees C based on single Sagnac configuration to -13.36 nm/degrees C. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据