Simultaneous Strain and Temperature Sensor Based on a Fiber Mach-Zehnder Interferometer Coated with Pt by Iron Sputtering Technology

被引：30

作者：

Dong, Xinran ^{[1
]}

Du, Haifeng ^{[1
]}

Sun, Xiaoyan ^{[1
]}

Duan, Ji'an ^{[1
]}

机构：

[1] Cent S Univ, Coll Mech & Elect Engn, State Key Lab High Performance Complex Mfg, 932 South Lushan St, Changsha 410083, Hunan, Peoples R China

来源：

MATERIALS | 2018年 / 11卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Mach-Zehnder interferometer (MZI); multimode fiber (MMF); Pt coating; dual-parameter sensing; PHOTONIC CRYSTAL FIBER; POLARIZATION-MAINTAINING FIBER; REFRACTIVE-INDEX; MODE FIBER; COMPACT; TAPER;

D O I：

10.3390/ma11091535

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We demonstrated a fiber in-line Mach-Zehnder interferometer (MZI) coated with platinum (Pt) for the simultaneous measurement of strain and temperature. The sensor was fabricated by splicing a section of multimode fiber (MMF) between two single mode fibers (SMFs) and the Pt coating was prepared by iron sputtering technology. Fine interference fringes of over 20 dB with a compact size of 20 mm were achieved. The experimental results of the two different resonant dips showed strain sensitivities of -2.06 pm/mu epsilon and -2.21 pm/mu epsilon, as well as temperature sensitivities of 55.2 pm/degrees C and 53.4 pm/degrees C, respectively. Furthermore, it was found that the Pt coating can improve the strain sensitivity significantly, resulting in an increase of about 54.5%. In addition, the sensor has advantages of easy fabrication, low cost, and high sensitivity, showing great potential for the dual-parameter sensing of strain and temperature.

引用

页数：10

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