A Hybrid Multimode Interference Structure-Based Refractive Index and Temperature Fiber Sensor

被引：71

作者：

Chen, Yaofei ^{[1
]}

Wang, Yan ^{[1
]}

Chen, Ruoyu ^{[1
]}

Yang, Wenkai ^{[1
]}

Liu, Hao ^{[1
]}

Liu, Tiegen ^{[1
,2
]}

Han, Qun ^{[1
]}

机构：

[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Key Lab Optoelect Informat Technol, Minist Educ, Tianjin 300072, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2016年 / 16卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Optical fiber sensors; refractive index; temperature; multimode interference; REFRACTOMETER; COMPENSATION;

D O I：

10.1109/JSEN.2015.2484346

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 all-fiber sensor based on cascaded singlemode-no-core-singlemode (SNS) and siglemode-multimode-singlemode (SMS) fiber structure is proposed and investigated. Simulation results show that for the given fibers, by appropriately choosing the lengths of no-core fiber and multimode fiber, the transmission spectrum will exhibit two distinguishable dips corresponding to SNS and SMS, respectively. The simultaneous measurement of liquids' refractive index (RI) and temperature can be realized by monitoring the two dips' central wavelength shifts. According to the simulations, a corresponding sensor is fabricated and tested. The experimental results demonstrate the feasibility of the sensor and show that the sensor has the RI and temperature sensitivities of 113.66 nm/RIU and 9.2 pm/degrees C, respectively.

引用

页码：331 / 335

页数：5

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