Multiwavelength Brillouin-Erbium Fiber Laser Temperature Sensor With Tunable and High Sensitivity

被引：25

作者：

Xu, Ronghui ^{[1
]}

Zhang, Xuping ^{[1
,2
]}

机构：

[1] Nanjing Univ, Inst Opt Commun Engn, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Inst Acoust, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2015年 / 7卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Fiber-laser sensor; multiwavelength Brillouin fiber laser; temperature sensor; tunable sensitivity; OPTICAL-FIBERS; SENSING APPLICATIONS; BEAT FREQUENCY; COMB FIBER; SCATTERING; GENERATION; SYSTEM; STRAIN;

D O I：

10.1109/JPHOT.2015.2422132

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 multiwavelength Brillouin-erbium fiber laser (MBEFL) temperature sensor with high and tunable sensitivity has been developed and experimentally demonstrated in this paper. Owing to rigid Brillouin frequency shift spacing of MBEFLs, MBEFLs are very suitable for temperature sensing and can be used to realize high and tunable sensing sensitivity. By monitoring the center frequency shift of the beat signal spectrum of the two same-order Brillouin Stokes waves coming from the sensing MBEFL and the reference one, the high and tunable sensitivity has been realized. The proposed tunable temperature sensor realizes a finer tuning step. It shows a high stability and provides a sensing sensitivity of 13.08 MHz/degrees C and a tuning step of 1.09 MHz/degrees C. At 12th-order sensitivity, the temperature error is about 0.23 degrees C (+/- 0.115 degrees C), and the temperature resolution is about 0.765 degrees C.

引用

页数：8

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