High Temperature High Sensitivity Multipoint Sensing System Based on Three Cascade Mach-Zehnder Interferometers

被引：18
|
作者：
Zhao, Na [1 ]
Lin, Qijing [1 ,2 ,3 ,4 ]
Jiang, Zhuangde [1 ]
Yao, Kun [1 ]
Tian, Bian [1 ]
Fang, Xudong [1 ]
Shi, Peng [5 ,6 ]
Zhang, Zhongkai [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, Collaborat Innovat Ctr High End Mfg Equipment, Xian 710054, Shaanxi, Peoples R China
[3] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China
[4] Zhejiang Univ, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Peoples R China
[5] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Shaanxi, Peoples R China
[6] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China
来源：
SENSORS | 2018年 / 18卷 / 08期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
high temperature sensing; cascade; Mach-Zehnder interferometer; fiber bitapers; POLYMER OPTICAL-FIBER; THERMAL-CONDUCTIVITY; REFRACTIVE-INDEX; DEPENDENT RAMAN; SENSOR; STRAIN;
D O I：
10.3390/s18082688
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A temperature multipoint sensing system based on three cascade Mach-Zehnder interferometers (MZIs) is introduced. The MZIs with different lengths are fabricated based on waist-enlarged fiber bitapers. The fast Fourier transformation is applied to the overlapping transmission spectrum and the corresponding interference spectra can be obtained via the cascaded frequency spectrum based on the inverse Fourier transformation. By analyzing the drift of interference spectra, the temperature response sensitivities of 0.063 nm/degrees C, 0.071 nm/degrees C, and 0.059 nm/degrees C in different furnaces can be detected from room temperature up to 1000 degrees C, and the temperature response at different regions can be measured through the sensitivity matrix equation. These results demonstrate feasibility of multipoint measurement, which also support that the temperature sensing system provides new solution to the MZI cascade problem.
引用
收藏
页数：14
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