Abstract
This paper proposes a sensor interrogation technique based on the analysis of the overall spectrum envelope of an in-line Mach–Zehnder interferometer structure with three different fibers. The interference pattern created by a level sensor of 120 mm was evaluated with both the traditional and the proposed interrogation techniques. The result shows that the technique here proposed improves the sensitivity of the sensor by more than an order of magnitude. Moreover, our new interrogation technique allows the length of an in-line Mach–Zehnder interferometer to be extended up to 470 mm while maintaining high linearity and sensitivity.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Luís C. B. Silva, Lorenzo B. Scandian, Marcelo E. V. Segatto, and Carlos E. S. Castellani
Appl. Opt. 58(35) 9712-9717 (2019)
Xiaodong Wen, Tigang Ning, Chao Li, Zexin Kang, Jing Li, Haidong You, Ting Feng, Jingjing Zheng, and Wei Jian
Appl. Opt. 53(1) 71-75 (2014)
Chuan Zhong, Changyu Shen, Yang You, Jinlei Chu, Xin Zou, Xinyong Dong, Yongxing Jin, and Jianfeng Wang
J. Opt. Soc. Am. B 29(5) 1136-1140 (2012)