Coupled -shifted fibre Bragg grating ring resonant strain sensors

被引：2
作者：
Campanella, C. E. [1 ]
机构：
[1] QOpSyS SRLS, Via Matteotti 23, I-70023 Bari, Italy
来源：
ELECTRONICS LETTERS | 2016年 / 52卷 / 22期
关键词：
strain sensors; Bragg gratings; optical resonators; fibre optic sensors; sensitivity analysis; light reflection; ring resonant strain sensors; enhanced sensitivity strain sensing applications; coupled; -FBGRR; coupled -shifted fibre Bragg grating ring resonators; primary transmission Lorentzian mode; split doublet; spectral response; reflection band; transmission Lorentzian resonance; -FBG; loop coupled -shifted Bragg gratings; resonant optical strain sensors;
D O I：
10.1049/el.2016.2526
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：
Resonant optical strain sensors, obtained by closing in loop coupled -shifted Bragg gratings (-FBGs), are reported. Despite of a conventional -FBG, showing a transmission Lorentzian resonance in the reflection band, the coupled -shifted Bragg grating structure is characterised by a spectral response formed by a split doublet of the primary transmission Lorentzian mode of -FBG. By closing in loop this structure, the coupled -shifted Bragg grating ring resonators show better performance than -shifted Bragg grating ring resonators in terms of strain sensitivity (i.e. 2.86 pm/epsilon) is demonstrated. Thus, the coupled -FBGRR is suitable for enhanced sensitivity strain sensing applications.
引用
收藏
页码：1873 / 1874
页数：2
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