Dual-parameter optical fiber sensor based on concatenated down-taper and multimode fiber

被引：20
作者：
Tong, Zhengrong [1 ]
Luan, Panpan [1 ]
Cao, Ye [1 ]
Zhang, Weihua [2 ]
Su, Jun [1 ]
机构：
[1] Tianjin Univ Technol, Tiahjin Key Lab Film Elect & Commun Devices, Sch Comp & Commun Engn, Tianjin 300384, Peoples R China
[2] Tianjin Univ Technol, Tiahjin Key Lab Film Elect & Commun Devices, Sch Elect Informat Engn, Tianjin 300384, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2016年 / 358卷
关键词：
Fiber sensor; Down-taper; Multimode fiber; Temperature; Liquid level; MACH-ZEHNDER INTERFEROMETER; LIQUID-LEVEL; REFRACTIVE-INDEX; TEMPERATURE;
D O I：
10.1016/j.optcom.2015.09.027
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel dual-parameter optical fiber sensor based on a single-mode fiber (SMF) down-taper and multimode fiber (MMF) is proposed and demonstrated. The sensor structure is formed by cascading a downtaper and MMF through a segment of SMF. The transmission spectrum exhibits response of the interference between core and different cladding modes. Two interference dips can be observed within a certain range of detection. Due to the different wavelength shifts of the selected two dips, simultaneous measurement of temperature and liquid level can be achieved. Experiment results indicate a good linear relation between he wavelength shift and external parameters (temperature and liquid level). The measured temperature sensitivities are 0.02 nm/degrees C and 0.031 nm/degrees C, and liquid level sensitivities are 0.022 nmfmm and 0.07 nmfmm, respectively. In addition, the fiber sensor has the advantages of compact size, simple fabrication and cost-effective. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：77 / 81
页数：5
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